Increase template Swift version from 4 to 5 (#41882)

diff --git a/packages/flutter_tools/templates/app/ios-swift.tmpl/Runner.xcodeproj/project.pbxproj.tmpl b/packages/flutter_tools/templates/app/ios-swift.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
index 8486f2c..57bdfd4 100644
--- a/packages/flutter_tools/templates/app/ios-swift.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
+++ b/packages/flutter_tools/templates/app/ios-swift.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
@@ -152,7 +152,7 @@
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 0910;
+						LastSwiftMigration = 1100;
 					};
 				};
 			};
@@ -323,7 +323,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = {{iosIdentifier}};
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Profile;
@@ -458,7 +458,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Debug;
@@ -484,7 +484,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = {{iosIdentifier}};
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Release;
@@ -513,7 +513,6 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
-
 	};
 	rootObject = 97C146E61CF9000F007C117D /* Project object */;
 }
diff --git a/packages/flutter_tools/templates/app/macos.tmpl/Runner.xcodeproj/project.pbxproj.tmpl b/packages/flutter_tools/templates/app/macos.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
index eb816d0..b35d85d 100644
--- a/packages/flutter_tools/templates/app/macos.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
+++ b/packages/flutter_tools/templates/app/macos.tmpl/Runner.xcodeproj/project.pbxproj.tmpl
@@ -199,7 +199,7 @@
 				TargetAttributes = {
 					33CC10EC2044A3C60003C045 = {
 						CreatedOnToolsVersion = 9.2;
-						LastSwiftMigration = 0920;
+						LastSwiftMigration = 1100;
 						ProvisioningStyle = Automatic;
 						SystemCapabilities = {
 							com.apple.Sandbox = {
@@ -383,7 +383,7 @@
 					"@executable_path/../Frameworks",
 				);
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Profile;
 		};
@@ -514,7 +514,7 @@
 				);
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -537,7 +537,7 @@
 					"@executable_path/../Frameworks",
 				);
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart b/packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart
index f4079cd..5d058e7 100644
--- a/packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart
+++ b/packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart
@@ -186,7 +186,7 @@
       when(mockXcodeProjectInterpreter.isInstalled).thenReturn(true);
       when(mockXcodeProjectInterpreter.getBuildSettings(any, any))
         .thenAnswer((_) async => <String, String>{
-          'SWIFT_VERSION': '4.0',
+          'SWIFT_VERSION': '5.0',
         });
 
       final FlutterProject project = FlutterProject.fromPath('project');
diff --git a/packages/flutter_tools/test/general.shard/project_test.dart b/packages/flutter_tools/test/general.shard/project_test.dart
index 676b78d..d629be9 100644
--- a/packages/flutter_tools/test/general.shard/project_test.dart
+++ b/packages/flutter_tools/test/general.shard/project_test.dart
@@ -314,7 +314,7 @@
         when(mockXcodeProjectInterpreter.getBuildSettings(any, any)).thenAnswer(
           (_) {
             return Future<Map<String, String>>.value(<String, String>{
-              'SWIFT_VERSION': '4.0',
+              'SWIFT_VERSION': '5.0',
             });
         });
         addAndroidGradleFile(project.directory,