build: set go version for linting

Author: shoenig

.github/workflows/ci.yaml

@@ -5,6 +5,9 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
+      - uses: hashicorp/setup-golang@v3
+        with:
+          version-file: go.mod
       - uses: golangci/golangci-lint-action@v3
         with:
           version: v1.55.2