Bump library/alpine from 3.21.1 to 3.21.2 (#105)

Bumps library/alpine from 3.21.1 to 3.21.2.

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -4,7 +4,7 @@ RUN apk add --no-cache libcap musl-dev \
  && cargo install --root /usr --git https://github.com/cloudflare/boringtun.git boringtun-cli \
  && setcap cap_net_admin+ep /usr/bin/boringtun-cli
 
-FROM docker.io/library/alpine:3.21.1
+FROM docker.io/library/alpine:3.21.2
 
 RUN apk add --no-cache catatonit wireguard-tools \
  && printf '%s\n' \