deps: Slight upgrade of Sentry.

Done with the following command:

yarn upgrade -- $(tools/deps | grep sentry) && yarn yarn-deduplicate && yarn

(See discussion [0].)

When `pod install` ran from the postinstall script, I got this
error:

```
[!] CocoaPods could not find compatible versions for pod "Sentry":
  In snapshot (Podfile.lock):
    Sentry (= 4.4.3, ~> 4.4.0)

  In Podfile:
    RNSentry (from `../node_modules/@sentry/react-native`) was resolved to 1.6.3, which depends on
      Sentry (~> 5.1.8)

Specs satisfying the `Sentry (= 4.4.3, ~> 4.4.0), Sentry (~> 5.1.8)` dependency were found, but they required a higher minimum deployment target.
```

Just running `pod update RNSentry` was enough to let `pod install`
run without errors the next time. I didn't pin down precisely what
the reported change in minimum deployment target was. In fact,
between 4.4.0 and 5.1.8 of Sentry, I don't see *any* change to
`s.ios.deployment_target` in the Podspec file [1] that gets
processed and hosted by CocoaPods as JSON, nor did I see changes to
`platforms.ios` in the JSON itself [2] [3].

But the current Podspec there has "8.0" for that value, which is
quite safe, as our deployment target (project > ZulipMobile > Info
in Xcode) is 10.3, and in any case, it works.

The idea to run `pod update RNSentry` came from a comment [4] on
CocoaPods/CocoaPods#4373.

[0] https://chat.zulip.org/#narrow/stream/243-mobile-team/topic/changes.20in.20generatedEs3.2Ejs/near/935892
[1] getsentry/sentry-cocoa@4.4.0...5.1.8#diff-90b813c6043692fcb10d7f0efa7cbf19
[2] https://github.com/CocoaPods/Specs/blob/master/Specs/a/b/d/Sentry/4.4.0/Sentry.podspec.json
[3] https://github.com/CocoaPods/Specs/blob/master/Specs/a/b/d/Sentry/5.1.8/Sentry.podspec.json
[4] CocoaPods/CocoaPods#4373 (comment)

Author: chrisbobbe

ios/Podfile.lock

@@ -272,19 +272,19 @@ PODS:
     - React
   - RNDeviceInfo (0.21.5):
     - React
-  - RNSentry (1.0.9):
+  - RNSentry (1.6.3):
     - React
-    - Sentry (~> 4.4.0)
+    - Sentry (~> 5.1.8)
   - RNSound (0.11.0):
     - React
     - RNSound/Core (= 0.11.0)
   - RNSound/Core (0.11.0):
     - React
   - RNVectorIcons (6.6.0):
     - React
-  - Sentry (4.4.3):
-    - Sentry/Core (= 4.4.3)
-  - Sentry/Core (4.4.3)
+  - Sentry (5.1.10):
+    - Sentry/Core (= 5.1.10)
+  - Sentry/Core (5.1.10)
   - Toast (4.0.0)
   - UMAppLoader (1.0.2)
   - UMBarCodeScannerInterface (5.1.0)
@@ -547,10 +547,10 @@ SPEC CHECKSUMS:
   rn-fetch-blob: f525a73a78df9ed5d35e67ea65e79d53c15255bc
   RNCAsyncStorage: 3c304d1adfaea02ec732ac218801cb13897aa8c0
   RNDeviceInfo: e7c5fcde13d40e161d8a27f6c5dc69c638936002
-  RNSentry: 2803ba8c8129dcf26b79e9b4d8c80168be6e4390
+  RNSentry: ae1e005e4f2655775475445a9c49c1d343e8e3a7
   RNSound: da030221e6ac7e8290c6b43f2b5f2133a8e225b0
   RNVectorIcons: 0bb4def82230be1333ddaeee9fcba45f0b288ed4
-  Sentry: 14bdd673870e8cf64932b149fad5bbbf39a9b390
+  Sentry: 8715e88b813bde9ad37aead365d5b04ac7302153
   Toast: 91b396c56ee72a5790816f40d3a94dd357abc196
   UMAppLoader: ee77a072f9e15128f777ccd6d2d00f52ab4387e6
   UMBarCodeScannerInterface: 9dc692b87e5f20fe277fa57aa47f45d418c3cc6c