Update dependencies for version 14.0.0-rc7

bower.json

     "update-core-version.js"
   ],
   "dependencies": {
-    "vaadin-core": "14.0.0-rc6",
+    "vaadin-core": "vaadin-core#14.0.0-rc7",
     "vaadin-board": "vaadin-board#2.1.0",
     "vaadin-charts": "vaadin-charts#6.2.3",
-    "vaadin-confirm-dialog": "vaadin-confirm-dialog#1.1.1",
+    "vaadin-confirm-dialog": "vaadin-confirm-dialog#1.1.4",
     "vaadin-cookie-consent": "vaadin-cookie-consent#1.1.1",
     "vaadin-crud": "vaadin-crud#1.0.5",
     "vaadin-grid-pro": "vaadin-grid-pro#2.0.3",

package.json

   "author": "Vaadin Ltd",
   "license": "(Apache-2.0 OR SEE LICENSE IN https://vaadin.com/license/cval-3.0)",
   "dependencies": {
-    "@vaadin/vaadin-core": "^14.0.0-rc6",
+    "@vaadin/vaadin-core": "^14.0.0-rc7",
     "@vaadin/vaadin-board": "^2.1.0",
     "@vaadin/vaadin-charts": "^6.2.3",
-    "@vaadin/vaadin-confirm-dialog": "^1.1.1",
+    "@vaadin/vaadin-confirm-dialog": "^1.1.4",
     "@vaadin/vaadin-cookie-consent": "^1.1.1",
     "@vaadin/vaadin-crud": "^1.0.5",
     "@vaadin/vaadin-grid-pro": "^2.0.3",