tbump before commit step to update functional test output fails

Running tbump on the maintenance branch with python 3.14 gives:
```
(pylint_dev) jwalls@MacBookAir pylint % tbump 4.0.2 --no-push --no-tag
```
```
fatal: unable to stat 'tests/functional/p/postponed/postponed_evaluation_not_activated.314.txt': No such file or directory
Error: `git add --renormalize .` exited with return code 128
```