[image_picker] Fix 'messages.g.h' file not found (#5635)

diff --git a/packages/image_picker/image_picker_ios/CHANGELOG.md b/packages/image_picker/image_picker_ios/CHANGELOG.md
index 96b1c7f..e39a314 100644
--- a/packages/image_picker/image_picker_ios/CHANGELOG.md
+++ b/packages/image_picker/image_picker_ios/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.8.5+3
+
+* Fixes 'messages.g.h' file not found.
+
 ## 0.8.5+2
 
 * Minor fixes for new analysis options.
diff --git a/packages/image_picker/image_picker_ios/ios/Classes/FLTImagePickerPlugin_Test.h b/packages/image_picker/image_picker_ios/ios/Classes/FLTImagePickerPlugin_Test.h
index 2c41677..64c2045 100644
--- a/packages/image_picker/image_picker_ios/ios/Classes/FLTImagePickerPlugin_Test.h
+++ b/packages/image_picker/image_picker_ios/ios/Classes/FLTImagePickerPlugin_Test.h
@@ -6,7 +6,7 @@
 
 #import <image_picker_ios/FLTImagePickerPlugin.h>
 
-#import <messages.g.h>
+#import "messages.g.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
diff --git a/packages/image_picker/image_picker_ios/pubspec.yaml b/packages/image_picker/image_picker_ios/pubspec.yaml
index d1de0a1..edb884a 100755
--- a/packages/image_picker/image_picker_ios/pubspec.yaml
+++ b/packages/image_picker/image_picker_ios/pubspec.yaml
@@ -2,7 +2,7 @@
 description: iOS implementation of the video_picker plugin.
 repository: https://github.com/flutter/plugins/tree/main/packages/image_picker/image_picker_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+image_picker%22
-version: 0.8.5+2
+version: 0.8.5+3
 
 environment:
   sdk: ">=2.14.0 <3.0.0"