chore(ci): show diff on failed format

The provided patch is great to fix large formatting errors, however, it
would be nice for CI to also show the diff for smaller changes that
could be directly typed without having to download the patch.

Signed-off-by: Mauro Ezequiel Moltrasio <mmoltras@redhat.com>

.github/workflows/format.yml

@@ -24,7 +24,7 @@ jobs:
 
       - name: Run pre-commit ©️
         run: |
-          pre-commit run --all-files
+          pre-commit run --show-diff-on-failure --color=always --all-files
 
       - name: Generate the git-diff 🚒
         if: failure()