chore(deps): update docker/metadata-action digest to 9e6ae02 (#255)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| docker/metadata-action | action | digest | `98669ae` -> `9e6ae02` |

---

### 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 has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://app.renovatebot.com/dashboard#github/open-feature/flagd).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNC45Ny4xIiwidXBkYXRlZEluVmVyIjoiMzQuOTcuMSJ9-->

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

.github/workflows/release-please.yaml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        uses: docker/metadata-action@9e6ae02878038daef2841c9e4bb61e486c726684
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}