#34 chore(ci): format pullfrog workflow

CI / check fails on every PR because .github/workflows/pullfrog.yml on main isn't formatted the way vp check expects. That file came in with a direct commit to main that never went through CI.

This runs vp fmt on that file and changes nothing else: the GOOGLE_GENERATIVE_AI_API_KEY value moves back onto one line, and trailing spaces are removed from two blank lines. The workflow's behavior is unchanged.

Verification: vp check passes locally with 0 errors (the failure seen on #31, #32 and #33 is gone).

🤖 Generated with Claude Code