* Build and Packaging Improvements

- Disable debugger in System Lock down mode (Internal 8430)
- Port changes for release automation to `6.1` (Internal 8402)
- Fix `MSI` `WIX` generation (#9013) (Internal 8385)
- Update `Microsoft.PowerShell.Archive` version (Internal 8380)
- Update package version in hosting test (Internal 8374)
- Bump to `dotnet` `2.1.11` release
- Remove update build table logic from release build (Internal 8364)
- Add `AccessToken` variable to jobs that perform signing (#9351)
- Support release branches based on the forward slash separator (#8903)