Update dependency @atlaskit/icon to v21.12.8

Author: renovate[bot]

app/jenkins-for-jira-ui/package-lock.json

@@ -16,7 +16,7 @@
     "@atlaskit/dynamic-table": "14.11.11",
     "@atlaskit/empty-state": "7.6.3",
     "@atlaskit/form": "8.11.13",
-    "@atlaskit/icon": "21.12.7",
+    "@atlaskit/icon": "21.12.8",
     "@atlaskit/logo": "13.14.8",
     "@atlaskit/modal-dialog": "12.6.10",
     "@atlaskit/page-header": "10.4.4",