Tasks for Spring Boot 2.6.6 and 2.5.12

[chenrujun]

Goal

Make Spring Cloud Azure libraries compatible with Spring Boot 2.6.6 and 2.5.12

Tasks

Refs: https://github.com/Azure/azure-sdk-for-java/wiki/Spring-Cloud-Azure-tasks-for-a-new-Spring-Boot-release

• Before azure-sdk-for-java in band release

  • Create a new issue to track the following tasks. Sample: #27863.
  • Read spring boot release notes. Sample: Spring-Boot-2.6-Release-Notes. Write down items we(Spring Cloud Azure team members) should care about. Just write these items by adding a new comment in the GitHub issue created in previous step.
  • Upgrade external dependencies' version according to spring-boot-dependencies and spring-cloud-dependencies. Refer to related readme. NOTE: This step should be finished before Core code complete. You can get more information about Core code complete in the Email with subject like APRIL Release Kickoff.Link PR:Upgrade external dependencies' version to spring-boot 2.6.6 #28280 and Upgrade external dependencies' version to spring-cloud 2021.0.2 #28562

• After azure-sdk-for-java in band release.

  Update spring-boot and spring-cloud version in these places:

  • azure-spring-boot-samples
  • Reference doc.
  • MS docs.
  • Wiki page: Spring Cloud Azure Timeline
  • Wiki page: Spring Versions Mapping
  • Wiki page: Spring Support Multiple Versions

[chenrujun]

Now core is released.
It's better not to update versions between core release and spring release.
But you can create PR and run tests.

#28013

[Netyyyy]

close in #28280 and #28562