Update golangci-lint GitHub Action to v7

Bumps golangci/golangci-lint-action from v6 to v7 in CI workflow for improved compatibility and latest features.

Author: jferrl

.github/workflows/ci.yaml

@@ -14,7 +14,7 @@ jobs:
         with:
           go-version: "1.25.x"
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v7
         with:
           version: v2.6.1