build: update gapic-generator-typescript to v1.2.10.
build: update gapic-generator-typescript to v1.2.10.

This update unblocks generating IAM v1 and several more libraries that were previously blocked by their package names.
Committer: da39a3ee5e6b4b0d3255bfef95601890afd80709@alexander-fenster
PiperOrigin-RevId: 361273630

googleapis/googleapis,googleapis/googleapis