build: add auto-approve to Node libraries (#1100) (#745)

* build: add auto-approve to Node libraries

Co-authored-by: Benjamin E. Coe <bencoe@google.com>
Source-Link: googleapis/synthtool@5cae043
Post-Processor: gcr.io/repo-automation-bots/owlbot-nodejs:latest@sha256:65aa68f2242c172345d7c1e780bced839bfdc344955d6aa460aa63b4481d93e5

.github/.OwlBot.lock.yaml

@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/repo-automation-bots/owlbot-nodejs:latest
-  digest: sha256:bbdd52de226c00df3356cdf25460397b429ab49552becca645adbc412f6a4ed5
+  digest: sha256:65aa68f2242c172345d7c1e780bced839bfdc344955d6aa460aa63b4481d93e5

.github/CODEOWNERS

@@ -7,3 +7,6 @@
 
 # The yoshi-nodejs team is the default owner for nodejs repositories.
 *     @googleapis/yoshi-nodejs @googleapis/api-profiler
+
+# The github automation team is the default owner for the auto-approve file.
+.github/auto-approve.yml @googleapis/github-automation

.github/auto-approve.yml

@@ -0,0 +1,7 @@
+rules:
+- author: "release-please[bot]"
+  title: "^chore: release"
+  changedFiles:
+  - "package\\.json$"
+  - "CHANGELOG\\.md$"
+  maxFiles: 3