feat(deps): update header to 5.6.0 (#741)

Author: brian-smith-tcril

package-lock.json

@@ -34,7 +34,7 @@
   },
   "dependencies": {
     "@edx/brand": "npm:@openedx/brand-openedx@^1.2.2",
-    "@edx/frontend-component-header": "5.3.0",
+    "@edx/frontend-component-header": "^5.6.0",
     "@edx/frontend-platform": "8.0.0",
     "@edx/openedx-atlas": "^0.6.0",
     "@openedx/frontend-slot-footer": "^1.0.2",