fix(ci): replace docker/login-action with direct docker login (CAR-994)

The docker/login-action@v3 does not work with Gitea's token. Replaced
with direct docker login command using ${{ github.token }}.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.gitea/workflows/ci.yml

@@ -43,11 +43,7 @@ jobs:
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
 
       - name: Log in to Gitea Container Registry
-        uses: docker/login-action@v3
+        run: echo "${{ github.token }}" | docker login ${{ env.REGISTRY }} -u ${{ github.actor }} --password-stdin
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITEA_TOKEN }}
 
       - name: Extract metadata
         id: meta