If there are no typescript changes, use build: cache as commit message
If there are there are only updates, use fix: ...
If there are any new additions, use feat: ...
If there are breaking changes, keep the previous ones and deprecate them. Only if there is no other way, add BREAKING CHANGE: ... to the commit body (not subject!) to trigger a breaking change.
Make sure to update the commits so that the merge results in helpful release notes, see Merging the Pull Request & releasing a new version.
In general
build: cacheas commit messagefix: ...feat: ...BREAKING CHANGE: ...to the commit body (not subject!) to trigger a breaking change.