Runtime release procedures

Milestone releases (dotnet/winforms + dotnet/windowsdesktop)

Merge any outstanding PRs, if necessary
Ensure the HEAD of the main branch builds successfully and all tests pass
Publish any unpublished API - run .\eng\ApiCompatibility\mark-shipped.cmd
Commit and wait for a successful build
(Milestone releases) Create "release/X.Y-qwe" branch (e.g. release/6.0-preview5) and push it into the main public trunk and the internal trunk. Wait for both build successfully.

Disable loc on "release/X.Y-qwe" branch (e.g.: #6753)
Switch back to the main branch
Update the Service Fabric bot with the new release label in .\github\fabricbot.json. Refer to .\docs\infra\automation.md, if have questions.
Update the branding (e.g.: https://github.com/dotnet/winforms/commit/719b2112778ffd1e7ded559ea2736b4011428117)
Commit and wait for a successful build.
Create new milestone for the new release before updating following bot service.
Move work items to this new milestone if they were on previous milestone and close the previous milestone.
Update necessary reports with the progress
If you are responsible for dotnet/windowsdesktop repo, make sure you change the branding there too.

Merge internal servicing branch (i.e. internal/internal/release/*) into the public branch, if necessary.
Update the branding (e.g.: https://github.com/dotnet/winforms/commit/480bd703c5af93b9e23dc7435c6029d685be7097)
Commit and wait for a successful build.
Ensure the HEAD of the servicing branch builds successfully and all tests pass
Update dotnet/installer with the released version (e.g.: https://github.com/dotnet/installer/commit/34ed90f436809631e254b9e15628cbcad7307629)
Create a new milestone.
Close the current milestone on the GitHub, ensuring all open issues/PRs are either closed or bumped to the following milestone
Merge any outstanding PRs, if necessary