Bump alpine from 3.18.2 to 3.18.3

Bumps alpine from 3.18.2 to 3.18.3.

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

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

Author: dependabot[bot]

Dockerfile

@@ -34,7 +34,7 @@ RUN --mount=type=cache,target=/go/pkg/mod \
 		-o /out/enduro-a3m-worker \
 		./cmd/enduro-a3m-worker
 
-FROM alpine:3.18.2 AS base
+FROM alpine:3.18.3 AS base
 ARG USER_ID=1000
 ARG GROUP_ID=1000
 RUN addgroup -g ${GROUP_ID} -S enduro