fix(deps): update dependency @edx/frontend-platform to v5.6.0

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "@edx/brand": "npm:@edx/[email protected]",
     "@edx/frontend-component-footer": "12.4.0",
     "@edx/frontend-component-header": "4.7.1",
-    "@edx/frontend-platform": "5.5.1",
+    "@edx/frontend-platform": "5.6.0",
     "@edx/paragon": "^20.20.0",
     "@edx/react-unit-test-utils": "1.7.0",
     "@edx/tinymce-language-selector": "1.1.0",