chore(deps): pin dependencies (#3)

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

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://github.com/actions/checkout) | action |
pinDigest | -> `c85c95e` |
|
[docker/build-push-action](https://github.com/docker/build-push-action)
| action | pinDigest | -> `2eb1c19` |
| [docker/login-action](https://github.com/docker/login-action) |
action | pinDigest | -> `465a078` |
| [docker/metadata-action](https://github.com/docker/metadata-action)
| action | pinDigest | -> `818d4b7` |

---

### Configuration

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

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

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

🔕 **Ignore**: Close this PR and you won't be reminded about these
updates 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://developer.mend.io/github/arthurgeek/vaultwarden-fly-template).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi41LjMiLCJ1cGRhdGVkSW5WZXIiOiIzNi41LjMiLCJ0YXJnZXRCcmFuY2giOiJtYWluIn0=-->

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

.github/workflows/publish.yaml

@@ -18,18 +18,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3
 
       - name: Login to ghcr
-        uses: docker/login-action@v2
+        uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc # v2
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Container meta
         id: meta
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@818d4b7b91585d195f67373fd9cb0332e31a7175 # v4
         with:
           images: |
             ghcr.io/${{ github.repository }}
@@ -41,7 +41,7 @@ jobs:
             type=ref, event=pr
 
       - name: Build and push to ghcr
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@2eb1c1961a95fc15694676618e422e8ba1d63825 # v4
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}