fix(deps): update dependency @edx/frontend-component-footer to v12.4.0

Author: renovate[bot]

package.json

@@ -35,7 +35,7 @@
   },
   "dependencies": {
     "@edx/brand": "npm:@edx/[email protected]",
-    "@edx/frontend-component-footer": "12.3.0",
+    "@edx/frontend-component-footer": "12.4.0",
     "@edx/frontend-component-header": "4.7.0",
     "@edx/frontend-platform": "5.5.1",
     "@edx/paragon": "^20.20.0",