Bump ubuntu (#3537)

Bumps the docker-deps group in /examples/deployment/kubernetes/mysql/image with 1 update: ubuntu.


Updates `ubuntu` from `a6d2b38` to `19478ce`

---
updated-dependencies:
- dependency-name: ubuntu
  dependency-type: direct:production
  dependency-group: docker-deps
...

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

examples/deployment/kubernetes/mysql/image/Dockerfile

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM ubuntu:jammy@sha256:a6d2b38300ce017add71440577d5b0a90460d0e57fd7aec21dd0d1b0761bbfb2
+FROM ubuntu:jammy@sha256:19478ce7fc2ffbce89df29fea5725a8d12e57de52eb9ea570890dc5852aac1ac
 
 # Patch the OS-level packages and remove unneeded dependencies.
 RUN apt-get update \