build(deps): bump alpine from 3.20 to 3.21

Bumps alpine from 3.20 to 3.21.

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

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

Dockerfile

@@ -32,7 +32,7 @@ RUN go-task build
 
 
 # Put everything together in a clean image
-FROM alpine:3.20
+FROM alpine:3.21
 
 ARG NAME