fix: update legacy android version in package.json (#1744)

* Update package.json

Fix broke builds for older projects

* Update package.json

---------

Co-authored-by: Eduardo Speroni <edusperoni@users.noreply.github.com>

Author: pianetarosso

package.json

@@ -23,7 +23,7 @@
   "// this gradle key is here for backwards compatibility - we'll phase it out slowly...": "",
   "gradle": {
     "version": "7.5",
-    "android": "7.3."
+    "android": "7.3.0"
   },
   "scripts": {
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",