When PR title got a prefix modified, run-run the CI

[cbeauchesne]

The CI is not rerunning the jobs when I update the PR's title.
it feels like it could be a bit confusing to have a CI that has executed on master, but the title says it's not master
you could make untrue conclusions

• When the language or the branch prefix on the PR title is modified, re-run the CI
• Do not re-run it otherwise, we don't want to wait 2h just because a typo is fixed in the PR title ... 💀

May be tricky to do ...

Side note : a safe-guard prevent to merge the PR with a branch name, so one could make untrue conclusion, but he won't merge the PR. So it's not really an issue here, more an improvement on the Dev-X

[simon-id]

I found a way to only trigger a job when the target branch changes: #3894
Now I need to find a way to trigger the tests when that happens