Update dependencies for version 14.11.8

bower.json

     "vaadin-charts": "vaadin/vaadin-charts#6.3.4",
     "vaadin-confirm-dialog": "vaadin/vaadin-confirm-dialog#1.3.1",
     "vaadin-cookie-consent": "vaadin/vaadin-cookie-consent#1.2.1",
-    "vaadin-core": "14.11.7",
+    "vaadin-core": "vaadin/vaadin-core#14.11.8",
     "vaadin-crud": "vaadin/vaadin-crud#1.4.0",
     "vaadin-grid-pro": "vaadin/vaadin-grid-pro#2.4.1",
     "vaadin-license-checker": "vaadin/license-checker#2.1.2",

package.json

     "@vaadin/vaadin-charts": "^6.3.4",
     "@vaadin/vaadin-confirm-dialog": "^1.3.1",
     "@vaadin/vaadin-cookie-consent": "^1.2.1",
-    "@vaadin/vaadin-core": "^14.11.7",
+    "@vaadin/vaadin-core": "^14.11.8",
     "@vaadin/vaadin-crud": "^1.4.0",
     "@vaadin/vaadin-grid-pro": "^2.4.1",
     "@vaadin/vaadin-rich-text-editor": "^1.4.0"