Release 6.0.0-A.2 (#8179)

* bump versions

* sync lib dependency versions

* audit and security reports

* release notes and changelog

* update release notes

lib/testing/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@alfresco/adf-testing",
   "description": "Alfresco ADF testing page and utils",
-  "version": "6.0.0-A.1",
+  "version": "6.0.0-A.2",
   "author": "Alfresco Software, Ltd.",
   "repository": {
     "type": "git",
@@ -11,7 +11,7 @@
     "url": "https://github.com/Alfresco/alfresco-ng2-components/issues"
   },
   "peerDependencies": {
-    "@alfresco/js-api": "5.3.0-539"
+    "@alfresco/js-api": "5.3.0"
   },
   "keywords": [
     "testing",