release: update latest-versions following angular 7.0.0 release

Author: alexeagle

packages/schematics/angular/utility/latest-versions.ts

@@ -8,11 +8,11 @@
 
 export const latestVersions = {
   // These versions should be kept up to date with latest Angular peer dependencies.
-  Angular: '~7.0.0-rc.0',
+  Angular: '~7.0.0',
   RxJs: '~6.3.3',
   ZoneJs: '~0.8.26',
   TypeScript: '~3.1.1',
   // The versions below must be manually updated when making a new devkit release.
-  DevkitBuildAngular: '~0.9.0-rc.1',
-  DevkitBuildNgPackagr: '~0.9.0-rc.1',
+  DevkitBuildAngular: '~0.9.0',
+  DevkitBuildNgPackagr: '~0.9.0',
 };