Bump alpine from 3.21.1 to 3.21.2

Bumps alpine from 3.21.1 to 3.21.2.

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

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

Dockerfile

@@ -1,6 +1,6 @@
 # checkov:skip=CKV_DOCKER_2: no healthcheck (yet)
 # checkov:skip=CKV_DOCKER_3: no user (yet)
-FROM alpine:3.21.1
+FROM alpine:3.21.2
 
 ARG BUILD_DATE
 ARG BUILD_VERSION