chore: Update README for Holesky v1.4.2 release (#1351)

**Motivation:**

Update docs for new Holesky version and contract addresses.

**Modifications:**

Set Holesky version to `v1.4.2` and update `DelegationManager` and
`AllocationManager` contract addresses in the README.

**Result:**

README reflects latest Holesky info.

Author: solimander

README.md

@@ -45,7 +45,7 @@ The deployments on `mainnet`, `holesky`, and `sepolia` are on the below versions
 | Environment | Version |
 | -------- | -------- |
 | Mainnet Ethereum | [`v1.3.0`](https://github.com/Layr-Labs/eigenlayer-contracts/releases/tag/v1.3.0) |
-| Testnet Holesky | [`v1.4.1`](https://github.com/Layr-Labs/eigenlayer-contracts/releases/tag/v1.4.1-testnet-holeksy) |
+| Testnet Holesky | [`v1.4.2`](https://github.com/Layr-Labs/eigenlayer-contracts/releases/tag/v1.4.2) |
 | Testnet Sepolia | [`v1.3.0`](https://github.com/Layr-Labs/eigenlayer-contracts/releases/tag/v1.3.0) |
 
 
@@ -143,12 +143,12 @@ You can view the deployed contract addresses below, or check out the code itself
 
 | Name | Proxy | Implementation | Notes |
 | -------- | -------- | -------- | -------- |
-| [`DelegationManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/DelegationManager.sol) | [`0xA44151489861Fe9e3055d95adC98FbD462B948e7`](https://holesky.etherscan.io/address/0xA44151489861Fe9e3055d95adC98FbD462B948e7) | [`0xDa6F...BF48`](https://holesky.etherscan.io/address/0xDa6F662777aDB5209644cF5cf1A61A2F8a99BF48) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
+| [`DelegationManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/DelegationManager.sol) | [`0xA44151489861Fe9e3055d95adC98FbD462B948e7`](https://holesky.etherscan.io/address/0xA44151489861Fe9e3055d95adC98FbD462B948e7) | [`0x5c79...4106`](https://holesky.etherscan.io/address/0x5c798965208a6FddEc2eA8505c544065645c4106) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`StrategyManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/StrategyManager.sol) | [`0xdfB5f6CE42aAA7830E94ECFCcAd411beF4d4D5b6`](https://holesky.etherscan.io/address/0xdfB5f6CE42aAA7830E94ECFCcAd411beF4d4D5b6) | [`0x7798...7679`](https://holesky.etherscan.io/address/0x7798625888ECf3EB2c3c74Dc2746e09d72747679) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`EigenPodManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/pods/EigenPodManager.sol) | [`0x30770d7E3e71112d7A6b7259542D1f680a70e315`](https://holesky.etherscan.io/address/0x30770d7E3e71112d7A6b7259542D1f680a70e315) | [`0x35b7...f304`](https://holesky.etherscan.io/address/0x35b7743633AcdaEB18a4894469fcdBF23E13f304) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`AVSDirectory`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/AVSDirectory.sol) | [`0x055733000064333CaDDbC92763c58BF0192fFeBf`](https://holesky.etherscan.io/address/0x055733000064333CaDDbC92763c58BF0192fFeBf) | [`0x6966...8a0b`](https://holesky.etherscan.io/address/0x69660e721e4013dd8FEf83dCE731E915d74b8a0b) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`RewardsCoordinator`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/RewardsCoordinator.sol) | [`0xAcc1fb458a1317E886dB376Fc8141540537E68fE`](https://holesky.etherscan.io/address/0xAcc1fb458a1317E886dB376Fc8141540537E68fE) | [`0xA3c3...0d69`](https://holesky.etherscan.io/address/0xA3c31d2FBAD3d924baA64f8789E03E9FA7d70d69) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.7.1/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
-| [`AllocationManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/AllocationManager.sol) | [`0x78469728304326CBc65f8f95FA756B0B73164462`](https://holesky.etherscan.io/address/0x78469728304326CBc65f8f95FA756B0B73164462) | [`0xe03d...4ee2`](https://holesky.etherscan.io/address/0xe03d546ada84b5624b50aa22ff8b87badef44ee2) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
+| [`AllocationManager`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/core/AllocationManager.sol) | [`0x78469728304326CBc65f8f95FA756B0B73164462`](https://holesky.etherscan.io/address/0x78469728304326CBc65f8f95FA756B0B73164462) | [`0xA248...968A`](https://holesky.etherscan.io/address/0xA24898174701fF888B127e65c827E441F4Bc968A) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`PermissionController`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/slashing-magnitudes/src/contracts/permissions/PermissionController.sol) | [`0x598cb226B591155F767dA17AfE7A2241a68C5C10`](https://holesky.etherscan.io/address/0x598cb226B591155F767dA17AfE7A2241a68C5C10) | [`0x7ab0...a2b9`](https://holesky.etherscan.io/address/0x7ab0ebd25d5ffe7527600ca5b2858c1a3faba2b9#code) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 
 ###### Strategies