Fix CI permissions for schema updates.

[rasmi]

I forgot to re-generate Python types in #914. CI fails here:
https://github.com/PAIR-code/deliberate-lab/actions/runs/20246909547/job/58129216321

Run git config user.name "github-actions[bot]"
→ lint-staged could not find any staged files matching configured tasks.
[main ca0c488] chore: update generated schemas and Python types
 1 file changed, 1 insertion(+)
remote: Permission to PAIR-code/deliberate-lab.git denied to github-actions[bot].
fatal: unable to access 'https://github.com/PAIR-code/deliberate-lab/': The requested URL returned error: 403
Error: Process completed with exit code 128.