chore(deps): bump docker in /updater

Bumps docker from 28.5.1-alpine3.22 to 29.1.2-alpine3.22.

---
updated-dependencies:
- dependency-name: docker
  dependency-version: 29.1.2-alpine3.22
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

updater/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker:28.5.1-alpine3.22
+FROM docker:29.1.2-alpine3.22
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV container=docker