build(deps): bump alpine in the docker-all group across 1 directory

Bumps the docker-all group with 1 update in the / directory: alpine.


Updates `alpine` from 3.21.0 to 3.21.2

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

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -9,7 +9,7 @@ RUN apk add --no-cache \
         CGO_ENABLED=0 go build -ldflags "-X main.Version=${VERSION}" -buildvcs=false && \
         cp n3dr /n3dr
 
-FROM alpine:3.21.0
+FROM alpine:3.21.2
 COPY --from=builder /etc/passwd /etc/passwd
 COPY --from=builder /n3dr /usr/local/bin/n3dr
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/