Upgrade `actions/download-artifact` from 6 to 7 version (#1785)

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

.github/workflows/docker.yml

@@ -151,7 +151,7 @@ jobs:
             }
             return out;
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           name: ${{ matrix.dist }}-${{ matrix.arch }}-${{ github.run_number }}
           path: docker/coturn/.cache/
@@ -208,7 +208,7 @@ jobs:
                         ||     'edge' }}-${{ matrix.dist }}"
              >> $GITHUB_OUTPUT
 
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           path: docker/coturn/.cache/