Merge pull request microsoft#14059 from microsoft/main

Merge for 1.29.1 (pre-release)

Merge pull request microsoft#14034 from microsoft/main

Merge for 1.29.0

Merge pull request microsoft#14003 from microsoft/main

Merge for 1.28.3 (release)

Merge for 1.28.2 (2nd time) (microsoft#13997)

* Fix some invalid assumptions for tasks (microsoft#13989)

* Update changeling and version for 1.28.2 (microsoft#13990)

* Update changelog and version for 1.28.2.

* Remove llvm from cgmanifest. (microsoft#13994)

* Update changelog. (microsoft#13996)

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Co-authored-by: Bob Brown <bobbrow@users.noreply.github.com>

Merge pull request microsoft#13983 from microsoft/main

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

Merge pull request microsoft#13964 from microsoft/main

Merge for 1.28.0

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

Merge for 1.27.7

Merge pull request microsoft#13935 from microsoft/main

Merge for 1.27.6

Merge pull request microsoft#13921 from microsoft/main

Merge for 1.27.5

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

Cherry-pick for 1.26.5