build(deps): Bump google/cloud-sdk from 0c79a8f to 538c693 (#1750)

Bumps google/cloud-sdk from `0c79a8f` to `538c693`.

---
updated-dependencies:
- dependency-name: google/cloud-sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Dockerfile.pubsub-emulator

@@ -1,3 +1,3 @@
 # gcloud sdk for pubsub emulator with netcat added for the startup health check
-FROM google/cloud-sdk:449.0.0@sha256:0c79a8f377849d3954998ac12725ac249b73143d1e11e7b26bb33adb54f5fcc1
+FROM google/cloud-sdk:449.0.0@sha256:538c6934442f6d78212cbdaecbd0e904fa0b1a47b95d0557f56936d53a872c5d
 RUN apt-get install -y netcat