Bump app version according to the latest release

Author: x-ji

Amethyst.xcodeproj/project.pbxproj

@@ -1030,7 +1030,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 0.21.0;
+				MARKETING_VERSION = 0.21.1;
 				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
 				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu17 gnu++14";
 				OTHER_SWIFT_FLAGS = "$(inherited) \"-D\" \"DEBUG\"";
@@ -1072,7 +1072,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 10.15;
-				MARKETING_VERSION = 0.21.0;
+				MARKETING_VERSION = 0.21.1;
 				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
 				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu17 gnu++14";
 				ONLY_ACTIVE_ARCH = NO;