Bump the docker-dependencies group across 1 directory with 2 updates

Bumps the docker-dependencies group with 2 updates in the /services/kuber directory: library/golang and library/alpine.


Updates `library/golang` from 1.24.1 to 1.24.2

Updates `library/alpine` from 3.20 to 3.21

---
updated-dependencies:
- dependency-name: library/golang
  dependency-version: 1.24.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: docker-dependencies
- dependency-name: library/alpine
  dependency-version: '3.21'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: docker-dependencies
...

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

Author: dependabot[bot]

services/kuber/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/golang:1.24.1 AS build
+FROM docker.io/library/golang:1.24.2 AS build
 
 ARG TARGETARCH
 
@@ -24,7 +24,7 @@ WORKDIR /go/services/kuber/server
 #Compile the golang code, CGO_ENABLE=0 removes cross compile dependencies
 RUN CGO_ENABLED=0 go build
 
-FROM docker.io/library/alpine:3.20
+FROM docker.io/library/alpine:3.21
 #Add repository label
 LABEL org.opencontainers.image.source "https://github.com/berops/claudie"
 #Add image name as a label