chore(deps): update docker/login-action digest to 4907a6d (#252)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
| [docker/login-action](https://redirect.github.com/docker/login-action)
([changelog](https://redirect.github.com/docker/login-action/compare/b45d80f862d83dbcd57f89517bcf500b2ab88fb2..4907a6ddec9925e35a0a9e82d7399ccc52663121))
| action | digest | `b45d80f` → `4907a6d` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/docker/login-action/badge)](https://securityscorecards.dev/viewer/?uri=github.com/docker/login-action)
|

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/settlemint/network-bootstrapper).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMDIuMTEiLCJ1cGRhdGVkSW5WZXIiOiI0My4xMDIuMTEiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==-->

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/qa.yml

@@ -100,7 +100,7 @@ jobs:
         if: |
           github.event_name == 'push' ||
           (github.event_name == 'pull_request' && github.event.pull_request.draft == false)
-        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}