chore: sync renovate template from synthtool (#2601)

In this PR:
- Sync googleapis/synthtool#1921
- Sync googleapis/synthtool#1922
- Sync googleapis/synthtool#1941

library_generation/owlbot/templates/java_library/renovate.json

@@ -16,6 +16,26 @@
  ".kokoro/requirements.txt",
  ".github/workflows/**"
  ],
+ "customManagers": [
+ {
+ "customType": "regex",
+ "fileMatch": [
+ "^.kokoro/presubmit/graalvm-native.*.cfg$"
+ ],
+ "matchStrings": ["value: \"gcr.io/cloud-devrel-public-resources/graalvm.*:(?<currentValue>.*?)\""],
+ "depNameTemplate": "com.google.cloud:sdk-platform-java-config",
+ "datasourceTemplate": "maven"
+ },
+ {
+ "customType": "regex",
+ "fileMatch": [
+ "^.github/workflows/unmanaged_dependency_check.yaml$"
+ ],
+ "matchStrings": ["uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v(?<currentValue>.+?)\\n"],
+ "depNameTemplate": "com.google.cloud:sdk-platform-java-config",
+ "datasourceTemplate": "maven"
+ }
+ ],
  "packageRules": [
  {
  "packagePatterns": [
@@ -57,7 +77,8 @@
  "^com.google.truth:truth",
  "^org.mockito:mockito-core",
  "^org.objenesis:objenesis",
- "^com.google.cloud:google-cloud-conformance-tests"
+ "^com.google.cloud:google-cloud-conformance-tests",
+ "^org.graalvm.buildtools:junit-platform-native"
  ],
  "semanticCommitType": "test",
  "semanticCommitScope": "deps"