CI: bump golangci version to v2

.github/workflows/tests.yml

@@ -253,7 +253,7 @@ jobs:
         uses: golangci/golangci-lint-action@v8
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.64.8
+          version: v2.4.0
           args: --verbose --timeout 5m
 
         # only run golangci-lint for pull requests, otherwise ALL hints get