Bump library/golang from 1.21.4 to 1.21.5 (#818)

Bumps library/golang from 1.21.4 to 1.21.5.

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

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

Author: dependabot[bot]

Dockerfile

@@ -26,7 +26,7 @@ RUN apt-get update && \
     make internal/resources/macoui internal/resources/blocky
 
 # Stage 3: Build
-FROM --platform=${BUILDPLATFORM} docker.io/library/golang:1.21.4 as builder
+FROM --platform=${BUILDPLATFORM} docker.io/library/golang:1.21.5 as builder
 
 ARG GIT_BUILD_HASH
 ARG TARGETARCH