add setup-go step in lint job for latest golangci-lint-action

Author: hrak

.github/workflows/pr-check.yaml

@@ -8,7 +8,12 @@ jobs:
     name: Lint
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v4
+      - name: Setup up Go 1.x
+        uses: actions/setup-go@v5
+        with:
+          go-version: "^1.15"
+      - name: Check out code
+        uses: actions/checkout@v4
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with: