chore: 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.binaries

@@ -10,7 +10,7 @@ WORKDIR /go/src/github.com/mendersoftware/mender-artifact
 COPY ./ .
 RUN make build-natives
 
-FROM alpine:3.20.2
+FROM alpine:3.20.3
 RUN apk add --no-cache libc6-compat xz-dev libressl-dev
 COPY --from=builder /go/src/github.com/mendersoftware/mender-artifact/mender-artifact* /go/bin/
 ENTRYPOINT [ "/go/bin/mender-artifact-linux" ]