Update JSON Forms to v3.0.0-alpha.0

Author: AlexandraBuzila

.gitignore

@@ -42,3 +42,4 @@ testem.log
 # System Files
 .DS_Store
 Thumbs.db
+.yalc

package-lock.json

@@ -23,9 +23,9 @@
     "@angular/platform-browser": "^11.2.12",
     "@angular/platform-browser-dynamic": "^11.2.12",
     "@angular/router": "^11.2.12",
-    "@jsonforms/angular": "^2.5.1",
-    "@jsonforms/angular-material": "^2.5.1",
-    "@jsonforms/core": "^2.5.1",
+    "@jsonforms/angular": "^3.0.0-alpha.0",
+    "@jsonforms/angular-material": "^3.0.0-alpha.0",
+    "@jsonforms/core": "^3.0.0-alpha.0",
     "ajv": "^6.10.2",
     "core-js": "^2.4.1",
     "json-refs": "^3.0.4",