chore: enable macOS build on 10.14

frontend/appflowy_flutter/macos/Runner.xcodeproj/project.pbxproj

@@ -434,7 +434,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = com.appflowy.appflowy.flutter;
 				PRODUCT_NAME = AppFlowy;
@@ -570,7 +570,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				PRODUCT_BUNDLE_IDENTIFIER = com.appflowy.appflowy.flutter;
 				PRODUCT_NAME = AppFlowy;
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -597,7 +597,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 11.0;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = com.appflowy.appflowy.flutter;
 				PRODUCT_NAME = AppFlowy;