Pre-release v1.42.0-B0021

[BernieWhite]

PR Summary

What's changed since v1.41.4:

• New rules:
  • Image Builder:
    • Check that image builder build and validation scripts are pinned by @BernieWhite.
      #2903
• Updated rules:
  • App Service:
    • Updated Azure.AppService.MinTLS to include TLS 1.3 as a valid minimum version by @BernieWhite.
      #3269
• General improvements:
  • Added a new quickstart guide for using Azure Pipelines with PSRule by @that-ar-guy.
    #3220
  • Added additional exclusions to policies for Azure.AppService.MinTLS by @BernieWhite.
    #1731
• Engineering:
  • Updates to WAF documentation by @BernieWhite.
    #2570

PR Checklist

• PR has a meaningful title
• Summarized changes
• Change is not breaking
• This PR is ready to merge and is not Work in Progress