Bump google.golang.org/grpc from 1.66.1 to 1.66.2

Bumps google.golang.org/grpc from 1.66.1 to 1.66.2.

Release notes

Sourced from google.golang.org/grpc's releases.

Release 1.66.2

Dependencies

• Remove unintentional dependency on the testing package (#7579)
• Remove unintentional dependency on the flate package (#7595)
  • Special Thanks: @​ash2k

Bug Fixes

• client: fix a bug that prevented memory reuse after handling unary RPCs (#7571)
  • Special Thanks: @​coxley

Commits

• d0bf90a Change version to 1.66.2 (#7620)
• c84da66 Cherry pick #7595 to v1.66.x release branch (#7621)
• 12487c8 Cherry pick #7571 and #7579 to v1.66.x release branch (#7616)
• 7185cf4 Change to version 1.66.2-dev (#7615)
• See full diff in compare view