Bump expected minimum Go version to 1.18 (hashicorp#173)

* Bump expected minimum Go version to 1.18 (hashicorp#171)

* Updating CHANGELOG.md (hashicorp#171)

* Amending CHANGELOG.md (hashicorp#171)

Author: bendbennett

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.17'
+          go-version: '1.18'
         id: go
 
       - name: Check out code into the Go module directory
@@ -71,7 +71,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.18'
           check-latest: true
 
       - name: Check out code

.go-version

@@ -1 +1 @@
-1.17.10
+1.18.5

DESIGN.md

@@ -17,7 +17,7 @@ HTTP URLs and either [HTTP/1.1](https://datatracker.ietf.org/doc/html/rfc2616) o
 [SPDY](https://tools.ietf.org/id/draft-ietf-httpbis-http2-00.html), 
 [QUIC](https://datatracker.ietf.org/doc/html/draft-ietf-quic-transport-34)) are not supported.
 * Support usage of either `http` (plaintext) or `https` (secure) requests. The current version of this provider is 
-built with [Go 1.17](https://go.dev/doc/go1.17) which [supports](https://go.dev/doc/go1.17#minor_library_changes) 
+built with [Go 1.18](https://go.dev/doc/go1.18) which [supports](https://go.dev/doc/go1.18#tls10) 
 [TLS/1.0](https://www.ietf.org/rfc/rfc2246.txt) ([deprecated](https://datatracker.ietf.org/doc/rfc8996/)), 
 [TLS/1.1](https://datatracker.ietf.org/doc/html/rfc4346) ([deprecated](https://datatracker.ietf.org/doc/rfc8996/)), 
 [TLS/1.2](https://datatracker.ietf.org/doc/html/rfc5246) and 

README.md

@@ -35,7 +35,7 @@ version it implements, and Terraform:
 ## Requirements
 
 * [Terraform](https://www.terraform.io/downloads)
-* [Go](https://go.dev/doc/install) (1.17)
+* [Go](https://go.dev/doc/install) (1.18)
 * [GNU Make](https://www.gnu.org/software/make/)
 * [golangci-lint](https://golangci-lint.run/usage/install/#local-installation) (optional)
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/terraform-providers/terraform-provider-http
 
-go 1.17
+go 1.18
 
 require (
 	github.com/hashicorp/terraform-plugin-docs v0.13.0