build(deps): Bump google/cloud-sdk from 4769605 to 648eb94 (#1656)

Bumps google/cloud-sdk from `4769605` to `648eb94`.

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

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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:444.0.0@sha256:4769605db3e6947e135e20b349e71a67e18e6383038b876f406ab2f6553ba9f7
+FROM google/cloud-sdk:444.0.0@sha256:648eb94d29587bbeb16705a401ee12c13c1efdc0da8e921678a7d345b0bdeb9e
 RUN apt-get install -y netcat