🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

renovate.json

@@ -11,17 +11,6 @@
     ":autodetectPinVersions"
   ],
   "ignorePaths": [".kokoro/requirements.txt"],
-  "customManagers": [
-    {
-      "customType": "regex",
-      "fileMatch": [
-        "^.kokoro/presubmit/graalvm-native.*.cfg$"
-      ],
-      "matchStrings": ["value: \"gcr.io/cloud-devrel-public-resources/graalvm.*:(?<currentValue>.*?)\""],
-      "depNameTemplate": "com.google.cloud:google-cloud-shared-config",
-      "datasourceTemplate": "maven"
-    }
-  ],
   "packageRules": [
     {
       "packagePatterns": [