Bump recommended CocoaPods version to 1.8 (#52071)

packages/flutter_tools/lib/src/macos/cocoapods.dart

@@ -69,7 +69,7 @@ class CocoaPods {
   Future<String> _versionText;
 
   String get cocoaPodsMinimumVersion => '1.6.0';
-  String get cocoaPodsRecommendedVersion => '1.6.0';
+  String get cocoaPodsRecommendedVersion => '1.8.0';
 
   Future<bool> get isInstalled =>
       processUtils.exitsHappy(<String>['which', 'pod']);

packages/flutter_tools/test/general.shard/macos/cocoapods_test.dart

@@ -68,7 +68,7 @@ void main() {
     projectUnderTest = FlutterProject.fromDirectory(fs.directory('project'));
     projectUnderTest.ios.xcodeProject.createSync(recursive: true);
     cocoaPodsUnderTest = CocoaPods();
-    pretendPodVersionIs('1.6.0');
+    pretendPodVersionIs('1.8.0');
     fs.file(fs.path.join(
       Cache.flutterRoot, 'packages', 'flutter_tools', 'templates', 'cocoapods', 'Podfile-ios-objc',
     ))
@@ -173,9 +173,17 @@ void main() {
       ProcessManager: () => mockProcessManager,
     });
 
-    testUsingContext('detects at recommended version', () async {
+    testUsingContext('detects below recommended version', () async {
       pretendPodIsInstalled();
       pretendPodVersionIs('1.6.0');
+      expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.belowRecommendedVersion);
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+    });
+
+    testUsingContext('detects at recommended version', () async {
+      pretendPodIsInstalled();
+      pretendPodVersionIs('1.8.0');
       expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.recommended);
     }, overrides: <Type, Generator>{
       ProcessManager: () => mockProcessManager,
@@ -183,7 +191,7 @@ void main() {
 
     testUsingContext('detects above recommended version', () async {
       pretendPodIsInstalled();
-      pretendPodVersionIs('1.6.1');
+      pretendPodVersionIs('1.8.1');
       expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.recommended);
     }, overrides: <Type, Generator>{
       ProcessManager: () => mockProcessManager,