chore(deps): update ghcr.io/renovatebot/renovate docker tag to v39.97 (…

…#397)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [ghcr.io/renovatebot/renovate](https://renovatebot.com)
([source](https://redirect.github.com/renovatebot/renovate)) | final |
minor | `39.96` -> `39.97` |

---

### Configuration

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

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

👻 **Immortal**: This PR will be recreated if closed unmerged. Get
[config
help](https://redirect.github.com/renovatebot/renovate/discussions) if
that's undesired.

---

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

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC45NC4xIiwidXBkYXRlZEluVmVyIjoiMzguOTQuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Co-authored-by: cgrindel-self-hosted-renovate[bot] <139595543+cgrindel-self-hosted-renovate[bot]@users.noreply.github.com>

renovate_image/Dockerfile

@@ -1,5 +1,5 @@
 # Based on Renovate image
-FROM ghcr.io/renovatebot/renovate:39.96
+FROM ghcr.io/renovatebot/renovate:39.97
 
 # Become root
 USER 0