build: update auto approve to v2, remove release autoapproving (#1432) (#1408)

* build: update auto-approve file to v2

Source-Link: googleapis/synthtool@19eb6fc
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:b9e4584a1fe3c749e3c37c92497b13dce653b2e694f0261f0610eb0e15941357

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:80bfa0c67226453b37b501be7748b2fa2a2676cfeec0012e79e3a1a8f1cbe6a3
-# created: 2022-04-14T19:57:08.518420247Z
+  digest: sha256:b9e4584a1fe3c749e3c37c92497b13dce653b2e694f0261f0610eb0e15941357
+# created: 2022-05-05T21:08:42.530332893Z

.github/auto-approve.yml

@@ -1,12 +1,3 @@
-rules:
-- author: "release-please[bot]"
-  title: "^chore: release"
-  changedFiles:
-  - "package\\.json$"
-  - "CHANGELOG\\.md$"
-  maxFiles: 3
-- author: "renovate-bot"
-  title: "^(fix|chore)\\(deps\\):"
-  changedFiles: 
-  - "package\\.json$"
-  maxFiles: 2
+processes:
+  - "NodeDependency"
+  - "OwlBotTemplateChanges"