8265031: Change default macOS min version for x86_64 to 10.12 and aar…

…ch64 to 11.0

Reviewed-by: jvos, arapte, pbansal

buildSrc/mac.gradle

@@ -55,7 +55,9 @@ def defaultSdkPath = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOS
 
 // Set the minimum API version that we require (developers do not need to override this)
 // Note that this is not necessarily the same as the preferred SDK version
-defineProperty("MACOSX_MIN_VERSION", "10.10");
+def isAarch64 = TARGET_ARCH == "aarch64" || TARGET_ARCH == "arm64";
+def macOSMinVersion = isAarch64 ? "11.0" : "10.12";
+defineProperty("MACOSX_MIN_VERSION", macOSMinVersion);
 
 // Create $buildDir/mac_tools.properties file and load props from it
 setupTools("mac_tools",