Update to support 7.1.0-beta03 and 7.0.3

Author: ghale

build.gradle

@@ -17,8 +17,8 @@ def isCI = (System.getenv('CI') ?: 'false').toBoolean()
 
 // Maps supported Android plugin versions to the versions of Gradle that support it
 def supportedVersions = [
-    "7.1.0-alpha11": ["7.3"],
-    "7.0.2": ["7.3"],
+    "7.1.0-beta03": ["7.3"],
+    "7.0.3": ["7.3"],
     "4.2.2": ["6.9.1", "7.3"],
     "4.1.3": ["6.5.1", "6.9.1"],
     "4.0.2": ["6.1.1", "6.9.1"],