Update dependencies for version 13.0.0-alpha4

bower.json

     "update-core-version.js"
   ],
   "dependencies": {
-    "vaadin-core": "13.0.0-alpha3",
+    "vaadin-core": "vaadin-core#13.0.0-alpha4",
     "vaadin-board": "vaadin-board#2.1.0",
     "vaadin-charts": "vaadin-charts#6.2.1",
     "vaadin-confirm-dialog": "vaadin-confirm-dialog#1.1.0",

package.json

   "author": "Vaadin Ltd",
   "license": "(Apache-2.0 OR SEE LICENSE IN https://vaadin.com/license/cval-3.0)",
   "dependencies": {
-    "@vaadin/vaadin-core": "13.0.0-alpha3",
-    "@vaadin/vaadin-board": "2.1.0",
-    "@vaadin/vaadin-charts": "6.2.1",
-    "@vaadin/vaadin-confirm-dialog": "1.1.0",
-    "@vaadin/vaadin-cookie-consent": "1.1.0",
-    "@vaadin/vaadin-crud": "1.0.1",
-    "@vaadin/vaadin-rich-text-editor": "1.0.0-beta2"
+    "@vaadin/vaadin-core": "^13.0.0-alpha4",
+    "@vaadin/vaadin-board": "^2.1.0",
+    "@vaadin/vaadin-charts": "^6.2.1",
+    "@vaadin/vaadin-confirm-dialog": "^1.1.0",
+    "@vaadin/vaadin-cookie-consent": "^1.1.0",
+    "@vaadin/vaadin-crud": "^1.0.1",
+    "@vaadin/vaadin-rich-text-editor": "^1.0.0-beta2"
   },
   "files": [],
   "scripts": {