Update pods to 6.7.0 again since iOS team has fixed the issue.
Update pods to 6.7.0 again since iOS team has fixed the issue.

This is relevant to cl/266272837 but include new changes since then.
iOS team fixed the issue in cl/266400014

PiperOrigin-RevId: 267239139

firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk,firebase/firebase-cpp-sdk