Bump golang in /examples/deployment/docker/log_server

Bumps golang from `a0b3bc4` to `114b9cc`.

---
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/log_server/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21.1-bookworm@sha256:a0b3bc435cf2118e62db49d611bcdfa87a525be6fdf49179a5c9dbd4d0f1c63f as build
+FROM golang:1.21.1-bookworm@sha256:114b9cc39f435cfc34e2d48d0cb12cba2015a87f359f5dbf3ee3b6cf3591b7fb as build
 
 WORKDIR /trillian