Bump alpine from 3.18.0 to 3.18.2 (#3044)

Bumps alpine from 3.18.0 to 3.18.2.

---
updated-dependencies:
- dependency-name: 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>

Dockerfile

@@ -53,7 +53,7 @@ COPY rel rel
 RUN mix release plausible
 
 # Main Docker Image
-FROM alpine:3.18.0
+FROM alpine:3.18.2
 LABEL maintainer="plausible.io <[email protected]>"
 
 ARG BUILD_METADATA={}