chore(deps): bump alpine from 3.19 to 3.20 (#48)

Bumps alpine from 3.19 to 3.20.

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

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

Author: dependabot[bot]

Dockerfile

@@ -23,7 +23,7 @@ FROM scratch AS artifact
 COPY --from=build /out/*.tar.gz /
 COPY --from=build /out/*.zip /
 
-FROM alpine:3.19 AS image
+FROM alpine:3.20 AS image
 RUN apk --update --no-cache add ca-certificates libressl shadow \
   && addgroup -g 1000 discord-bot \
   && adduser -u 1000 -G discord-bot -s /sbin/nologin -D discord-bot \