feat(deps): update header to 5.6.0 (#887)

Author: brian-smith-tcril

package-lock.json

@@ -32,7 +32,7 @@
   "dependencies": {
     "@edx/brand": "npm:@openedx/brand-openedx@^1.2.2",
     "@edx/frontend-component-footer": "^14.0.0",
-    "@edx/frontend-component-header": "^5.0.2",
+    "@edx/frontend-component-header": "^5.6.0",
     "@edx/frontend-platform": "^7.1.0",
     "@edx/openedx-atlas": "^0.6.0",
     "@fortawesome/fontawesome-svg-core": "^6.1.1",