Bump the actions group with 6 updates (#1910)

- Updates `actions/checkout` from 4 to 6
- Updates `docker/login-action` from 3 to 4
- Updates `Chizkiyahu/delete-untagged-ghcr-action` from 5 to 6
- Updates `actions/upload-artifact` from 4 to 7
- Updates `actions/download-artifact` from 4 to 8
- Updates `cygwin/cygwin-install-action` from 4 to 6

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-container.yml

@@ -14,10 +14,10 @@ jobs:
       packages: write
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -43,7 +43,7 @@ jobs:
 
       - name: Delete untagged container images
         if: github.repository_owner == 'gbdev'
-        uses: Chizkiyahu/delete-untagged-ghcr-action@v5
+        uses: Chizkiyahu/delete-untagged-ghcr-action@v6
         with:
           # Requires a personal access token with delete:packages permissions
           token: ${{ secrets.PAT_TOKEN }}