Fix bump of Podfile.lock after release (#55232)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/55232

Changelog: [Internal]

As suggested by cipolleschi, this is a more stable solution given that the workflow has been consistently failing for the past couple of RCs.

Reviewed By: cipolleschi

Differential Revision: D90992194

fbshipit-source-id: 7586a4bf141a875b2d780d1a359e79fc42c9ffda