Bump golang from 1.21.4-bookworm to 1.21.5-bookworm (#108)

Bumps golang from 1.21.4-bookworm to 1.21.5-bookworm.

---
updated-dependencies:
- dependency-name: golang
  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

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-FROM golang:1.21.4-bookworm AS gnb
+FROM golang:1.21.5-bookworm AS gnb
 
 LABEL maintainer="ONF <omec-dev@opennetworking.org>"