fix(ci): correct corrupted docker/build-push-action SHA

The SHA for docker/build-push-action@v7.2.0 in tag.yaml and cron.yaml
was corrupted: 0d7f5c8f should be 0d6e8b85.

Correct SHA from git ls-remote refs/tags/v7.2.0:
f9f3042f7e2789586610d6e8b85c8f03e5195baf

Fixes CI run #2437 job #6165 (reference not found on docker/login-action
clone — likely cascade from the corrupted build-push-action SHA).

.gitea/workflows/cron.yaml

@@ -44,7 +44,7 @@ jobs:
           images: jcabillot/ip
           tags: |
             type=raw,value=${{ steps.get-latest-tag.outputs.tag }}-latest,enable=${{ steps.get-latest-tag.outputs.tag != '' }}
-      - uses: docker/build-push-action@f9f3042f7e2789586610d7f5c8f03e5195baf # v7.2.0
+      - uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
         with:
           context: .
           push: true