Bump alpine from 3.19 to 3.20 in the docker group

Bumps the docker group with 1 update: alpine.


Updates `alpine` from 3.19 to 3.20

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

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -6,7 +6,7 @@
 # e.g.: `docker build --rm --build-arg "BASE_IMAGE=alpine:latest" -f ./Dockerfile .`
 ARG BASE_IMAGE="scratch"
 
-FROM alpine:3.19 as builder
+FROM alpine:3.20 as builder
 
 # renovate: source=github-tags name=curl/curl versioning=regex:^(?:curl-)?(?<major>\d+)_(?<minor>\d+)_(?<patch>\d+)$ extractVersion=^(?:curl-)?(?<version>[\d_]+)$
 ENV CURL_VERSION="8_8_0"