build(deps): Bump google.com/cloudsdktool/google-cloud-cli (#2466)

Bumps google.com/cloudsdktool/google-cloud-cli from 519.0.0-emulators to 520.0.0-emulators.

---
updated-dependencies:
- dependency-name: google.com/cloudsdktool/google-cloud-cli
  dependency-version: 520.0.0-emulators
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Dockerfile.pubsub-emulator

@@ -1,3 +1,3 @@
 # gcloud sdk for pubsub emulator with netcat added for the startup health check
-FROM gcr.io/google.com/cloudsdktool/google-cloud-cli:519.0.0-emulators@sha256:78db84c1d8be6fd2282789f7b8a57b5627ab0b1182a6dd0110b86c3fef078ee4
+FROM gcr.io/google.com/cloudsdktool/google-cloud-cli:520.0.0-emulators@sha256:17fc3952a0006b010fda73df129b805ca07ce02a57d54a5053be963d8150ccc4
 RUN apt-get update -y && apt-get install -y netcat-traditional