Find out the SHA for when the branch was initiated:
$ git merge-base feature/248227-create-drop-artifact develop
b373da2f4b24e57a147021df1d3964a46b47edf3
Rebase / squash interactively:
$ git rebase -i b373da2f4b24e57a147021df1d3964a46b47edf3
Force push to the branch (only do that if branch was not shared elsewhere, mostly OK with PRs):
git push origin +feature/248227-create-drop-artifact