chore: add trusted-contribution.yml (#439)

.github/trusted-contribution.yml

@@ -0,0 +1,19 @@
+# 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
+#
+#     https://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.
+
+annotations:
+  - type: label
+    text: "tests: run"
+
+trustedContributors: ['renovate-bot', 'gcf-merge-on-green[bot]']