Merge pull request #13983 from microsoft/main

Update changleog (2nd time). (#13981)

Merge pull request #13964 from microsoft/main

Merge for 1.28.0

Merge pull request #13944 from microsoft/seanmcm/1_27_7_release

Merge for 1.27.7

Merge pull request #13935 from microsoft/main

Merge for 1.27.6

Merge pull request #13921 from microsoft/main

Merge for 1.27.5

Merge pull request #13919 from microsoft/seanmcm/1_26_5_release

Cherry-pick for 1.26.5

Merge pull request #13913 from microsoft/main

Merge for 1.27.4 (2nd time)

Merge pull request #13900 from microsoft/seanmcm/1_26_4_release

1.26.4 release

Merge pull request #13895 from microsoft/main

Merge for 1.27.3

Fix changelog version. (#13870)