feat(platform): update PR target branch if baseBranch changed

[RahulGautamSingh]

Changes

Sets destination branch when updating existing pull requests.

Context

Closes: #19900

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[rarkins]

So this PR means we always set the target branch when updating a PR, even if the branch hasn't changed?

[RahulGautamSingh]

So this PR means we always set the target branch when updating a PR, even if the branch hasn't changed?

Yes

[rarkins]

Tested on each platform except Bitbucket server?

[RahulGautamSingh]

Tested on each platform except Bitbucket server?

codecommit is pending too.

[rarkins]

So is this still in progress, or ready to merge?

[RahulGautamSingh]

So is this still in progress, or ready to merge?

I am stuck with codecommit as there isn't any command to update the destination-branch of an existing PR using the @aws-codecommit0client docs.

[rarkins]

That's what I thought. Let's skip it

[renovate-release]

🎉 This PR is included in version 35.155.0 🎉

The release is available on:

• GitHub release
• 35.155.0

Your semantic-release bot 📦🚀