chore(java): add a note in README for migrated split repos (googleapis#1687) (googleapis#850)

* chore(java): add a note in README for migrated split repos (googleapis#1687)

* chore(java): add a note in README for migrated split repos

Disable renovate bot and flaky bot for split repositories
that have moved to the Java monorepo.
The Java monorepo will pass the "monorepo=True" parameter
to java.common_templates method in its owlbot.py files so that
the migration note will not appear in the README in the monorepo.

Co-authored-by: Jeff Ching <chingor@google.com>
Source-Link: googleapis/synthtool@d4b2916
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:edae91ccdd2dded2f572ec341a768ad180305a3e8fbfd93064b28e237d35920a

* 🦉 Updates from OwlBot post-processor

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

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Jeff Ching <chingor@google.com>
Co-authored-by: Deepankar Dixit <90280028+ddixit14@users.noreply.github.com>

Author: 3 people

java-container/.github/.OwlBot.lock.yaml

@@ -14,3 +14,4 @@
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
   digest: sha256:894d56f45fc3f4f0d5f3bcf790846419ee2d8e44715eae8917d6a1bba2b7283d
+

java-container/README.md

@@ -56,13 +56,13 @@ implementation 'com.google.cloud:google-cloud-container'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-container:2.8.0'
+implementation 'com.google.cloud:google-cloud-container:2.9.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-container" % "2.8.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-container" % "2.9.0"
 ```
 
 ## Authentication