Bump alpine from 3.20.2 to 3.20.3

Bumps alpine from 3.20.2 to 3.20.3.

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

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

Dockerfile

@@ -22,7 +22,7 @@ COPY lib lib
 RUN mix do compile, release
 
 # prepare release image
-FROM alpine:3.20.2 AS app
+FROM alpine:3.20.3 AS app
 RUN apk add --no-cache openssl ncurses-libs
 WORKDIR /app
 RUN chown nobody:nobody /app