Ensure up-to-date version of go

Author: tmccombs

.github/workflows/ci.yml

@@ -13,8 +13,7 @@ jobs:
     strategy:
       matrix:
         go:
-          - "1.21"
-          - "1.19"
+          - "~1.21.6"
     steps:
       - name: Setup
         uses: actions/setup-go@v5

.github/workflows/deploy.yml

@@ -43,7 +43,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: 1.21
+          go-version: '~1.21.6'
       - name: Update environment
         run: |
           echo "VERSION=${GITHUB_REF#refs/tags/v}" >>  $GITHUB_ENV