Cherry pick fixes and update `package.json` (microsoft#20127)

- Update engine to upcoming VS Code version. (microsoft#20058)
- Update `package.json` to remove `-rc`.

Co-authored-by: Karthik Nadig <kanadig@microsoft.com>

Cherry fixes for point release (microsoft#19996)

remove rc (microsoft#19958)

Update release version. (microsoft#19771)

Update version for point release. (microsoft#19700)

Update version. (microsoft#19636)

Update package.json and CHANGELOG.md (microsoft#19478)

Update debugpy to 1.6.2 (microsoft#19424)

Update CHANGELOG.md

Co-authored-by: Kartik Raj <karraj@microsoft.com>

Update version for release (microsoft#19264)