fix: Upgrade header, temporarily re-introducing Maintenance link (#1676)

We are temporarily re-introducing the Maintenance link, as the
Maintenance Announcements tool is still in use, as discussed on:
openedx/openedx-platform#35852

There are no other significant changes in this version bump:
openedx/frontend-component-header@v5.8.0...v5.8.3

Author: kdmccormick

package-lock.json

@@ -50,7 +50,7 @@
     "@edx/brand": "npm:@openedx/brand-openedx@^1.2.3",
     "@edx/browserslist-config": "1.2.0",
     "@edx/frontend-component-footer": "^14.1.0",
-    "@edx/frontend-component-header": "^5.8.0",
+    "@edx/frontend-component-header": "^5.8.3",
     "@edx/frontend-enterprise-hotjar": "^2.0.0",
     "@edx/frontend-platform": "^8.0.3",
     "@edx/openedx-atlas": "^0.6.0",