build(deps): bump google.com/cloudsdktool/google-cloud-cli (#6821)

Bumps google.com/cloudsdktool/google-cloud-cli from 501.0.0-emulators to 502.0.0-emulators.

---
updated-dependencies:
- dependency-name: google.com/cloudsdktool/google-cloud-cli
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docker/images/pubsub-emulator/Dockerfile

@@ -1,3 +1,3 @@
 # Define this image outside of docker-compose.yml so that it gets dependabot updates
-FROM gcr.io/google.com/cloudsdktool/google-cloud-cli:501.0.0-emulators@sha256:4dfc65b1795329f1a94316d3a0eb70a4a37d4813cac0efe05c43b08b2e66d44d
+FROM gcr.io/google.com/cloudsdktool/google-cloud-cli:502.0.0-emulators@sha256:0a88d2c2f2d9afc4ec599e4019e96b893eb0ff41fbe4bcb1c482834989cb7d5f
 # also available as google/cloud-sdk:<version>-emulators