Bump golang in /examples/deployment/docker/db_client

Bumps golang from `48b942a` to `3c7ad81`.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

examples/deployment/docker/db_client/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.22.2-bookworm@sha256:48b942a5a9803fafeb748f1a9c6edeb71e06653bb4df25f63f909151e15e9618
+FROM golang:1.22.2-bookworm@sha256:3c7ad81405250a6b8027c7c9c2a9ab23cd8d4f9870994bf350ee6045704d47a5
 
 RUN apt-get update && \
     apt-get install -y mariadb-client