chore(deps): update gitlab/gitlab-runner docker tag to alpine-v17.3.1 (hetznercloud/fleeting-plugin-hetzner!111)

This MR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [gitlab/gitlab-runner](https://gitlab.com/gitlab-org/gitlab-runner) ([changelog](https://gitlab.com/gitlab-org/gitlab-runner/-/blob/master/CHANGELOG.md)) | final | patch | `alpine-v17.3.0` -> `alpine-v17.3.1` |

---

### Configuration

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

🚦 **Automerge**: Enabled.

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

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

---

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

---

This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC40Ni4yIiwidXBkYXRlZEluVmVyIjoiMzguNDYuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Author: Hetzner Cloud Bot

dev/Dockerfile

@@ -10,6 +10,6 @@ RUN ls -al
 
 RUN go build ./cmd/fleeting-plugin-hetzner
 
-FROM gitlab/gitlab-runner:alpine-v17.3.0
+FROM gitlab/gitlab-runner:alpine-v17.3.1
 
 COPY --from=builder /build/fleeting-plugin-hetzner /bin/fleeting-plugin-hetzner