github/workflow: test using all Go versions in range [1.16, 1.21]

Author: leonklingele

.github/workflows/ci.yml

@@ -1,21 +1,27 @@
-# Adapted from https://github.com/mvdan/github-actions-golang/blob/7aaba8c78195e7b688422b1a3e0733e93d525178/README.md
+# Adapted from https://github.com/mvdan/github-actions-golang/blob/b7c76395d24d6483ab668e5bf1e6d0cb2794c831/README.md
 
 on: [ 'push', 'pull_request' ]
 name: BuildAndTest
 jobs:
   test:
     strategy:
       matrix:
-        go-version: [ '1.17.x', '1.16.x' ]
+        go-version:
+          - '1.16.x'
+          - '1.17.x'
+          - '1.18.x'
+          - '1.19.x'
+          - '1.20.x'
+          - '1.21.x'
         os: [ 'ubuntu-latest', 'macos-latest', 'windows-latest' ]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Install Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go-version }}
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Build
       run: make build
     - name: Test