Bump alpine from 3.18 to 3.19 in /package

Bumps alpine from 3.18 to 3.19.

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

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

Author: dependabot[bot]

package/Dockerfile

@@ -1,3 +1,3 @@
-FROM alpine:3.18
+FROM alpine:3.19
 COPY bin/helm-controller /usr/bin/
 CMD ["helm-controller"]