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

@@ -1,4 +1,4 @@
-FROM alpine:3.20.2
+FROM alpine:3.20.3
 
 ARG ALPINE_PACKAGES="php83-iconv php83-pdo_mysql php83-pdo_pgsql php83-openssl php83-simplexml"
 ARG COMPOSER_PACKAGES="aws/aws-sdk-php google/cloud-storage"