chore: new owl bot post processor docker image (#7258)

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,3 +1,16 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
 docker:
-  digest: sha256:289c9fb3f2f6deae65d25cf97e1cc94c3fb09df93e82c6780f3ef53c13cf76b4
   image: gcr.io/cloud-devrel-public-resources/owlbot-go:latest
+  digest: sha256:289c9fb3f2f6deae65d25cf97e1cc94c3fb09df93e82c6780f3ef53c13cf76b4