[xaprepare] Track the versions of Android SDK Levels available on CI agents.

Author: jpobst

build-tools/xaprepare/xaprepare/ConfigAndData/Dependencies/AndroidToolchain.cs

@@ -69,8 +69,8 @@ public AndroidToolchain ()
 				new AndroidPlatformComponent ("platform-30_r01",   apiLevel: "30", pkgRevision: "1"),
 				new AndroidPlatformComponent ("platform-31_r01",   apiLevel: "31", pkgRevision: "1"),
 				new AndroidPlatformComponent ("platform-32_r01",   apiLevel: "32", pkgRevision: "1"),
-				new AndroidPlatformComponent ("platform-33_r02",   apiLevel: "33", pkgRevision: "2"),
-				new AndroidPlatformComponent ("platform-34-ext7_r01",   apiLevel: "34", pkgRevision: "1"),
+				new AndroidPlatformComponent ("platform-33_r03",   apiLevel: "33", pkgRevision: "3"),
+				new AndroidPlatformComponent ("platform-34_r02",   apiLevel: "34", pkgRevision: "2"),
 
 				new AndroidToolchainComponent ("sources-34_r01",
 					destDir: Path.Combine ("sources", "android-34"),