Update go linter version (#37579)

Author: Amar3tto

playground/backend/cmd/server/controller.go

@@ -491,7 +491,7 @@ func (controller *playgroundController) SaveSnippet(ctx context.Context, req *pb
 		logger.Error("SaveSnippet(): the runner is trying to save the snippet")
 		return nil, cerrors.InvalidArgumentError(errorTitleSaveSnippet, "The runner doesn't support snippets")
 	}
-	if req.Files == nil || len(req.Files) == 0 {
+	if len(req.Files) == 0 {
 		logger.Error("SaveSnippet(): files are empty")
 		return nil, cerrors.InvalidArgumentError(errorTitleSaveSnippet, "Snippet must have files")
 	}

playground/backend/cmd/server/server.go

@@ -18,7 +18,7 @@ package main
 import (
 	"beam.apache.org/playground/backend/internal/external_functions"
 	"context"
-	"fmt"
+	"errors"
 	"github.com/improbable-eng/grpc-web/go/grpcweb"
 	"google.golang.org/grpc"
 	"os"
@@ -153,7 +153,7 @@ func setupSdkCatalog(ctx context.Context, cacheService cache.Cache, db db.Databa
 	if len(sdks) != len(sdkNames) {
 		errMsg := "setupSdkCatalog() database doesn't have all sdks"
 		logger.Error(errMsg)
-		return nil, fmt.Errorf(errMsg)
+		return nil, errors.New(errMsg)
 	}
 	if err = cacheService.SetSdkCatalog(ctx, sdks); err != nil {
 		logger.Errorf("setupSdkCatalog() error during setting sdk catalog to the cache, err: %s", err.Error())

playground/backend/env_setup.sh

@@ -14,7 +14,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-GO_LINTER_VERSION=1.59.1
+GO_LINTER_VERSION=2.9.0
 
 # Install GO Linter
 #wget https://github.com/golangci/golangci-lint/releases/download/v1.42.1/golangci-lint-$GO_LINTER_VERSION-linux-amd64.deb