Pre-release v1.39.0-B0009

[BernieWhite]

PR Summary

What's changed since v1.38.0:

• New rules:
  • App Service:
  • Verify that app service plans have availability zones configured by @BenjaminEngeset. #2964
  • App Service Environment:
  • Verify that app service environments have availability zones configured by @BenjaminEngeset. #2964
  • Azure SQL Database:
  • Verify that Azure SQL databases have a customer-controlled maintenance window configured by @BenjaminEngeset. #2956
  • Azure SQL Managed Instance:
  • Verify that Azure SQL Managed Instances have a customer-controlled maintenance window configured by @BenjaminEngeset. #2979
  • Service Bus:
  • Verify that service bus namespaces have geo-replication configured by @BenjaminEngeset. #2988
• Engineering:
  • Bump xunit to v2.9.0. #2982
  • Bump xunit.runner.visualstudio to v2.8.2. #2982

PR Checklist

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