[ios_platform_images] Bump minimum Flutter version and iOS deployment target (#4353)

diff --git a/packages/ios_platform_images/CHANGELOG.md b/packages/ios_platform_images/CHANGELOG.md
index a7270ee..2ebd1d1 100644
--- a/packages/ios_platform_images/CHANGELOG.md
+++ b/packages/ios_platform_images/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.0+2
+
+* Update minimum Flutter SDK to 2.5 and iOS deployment target to 9.0.
+
 ## 0.2.0+1
 
 * Add iOS unit test target.
diff --git a/packages/ios_platform_images/example/ios/Flutter/AppFrameworkInfo.plist b/packages/ios_platform_images/example/ios/Flutter/AppFrameworkInfo.plist
index 6b4c0f7..f2872cf 100644
--- a/packages/ios_platform_images/example/ios/Flutter/AppFrameworkInfo.plist
+++ b/packages/ios_platform_images/example/ios/Flutter/AppFrameworkInfo.plist
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>9.0</string>
 </dict>
 </plist>
diff --git a/packages/ios_platform_images/example/ios/Runner.xcodeproj/project.pbxproj b/packages/ios_platform_images/example/ios/Runner.xcodeproj/project.pbxproj
index 0ee14af..02e41bc 100644
--- a/packages/ios_platform_images/example/ios/Runner.xcodeproj/project.pbxproj
+++ b/packages/ios_platform_images/example/ios/Runner.xcodeproj/project.pbxproj
@@ -457,7 +457,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -539,7 +539,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -588,7 +588,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
diff --git a/packages/ios_platform_images/example/pubspec.yaml b/packages/ios_platform_images/example/pubspec.yaml
index e45e769..97241b6 100644
--- a/packages/ios_platform_images/example/pubspec.yaml
+++ b/packages/ios_platform_images/example/pubspec.yaml
@@ -3,7 +3,8 @@
 publish_to: none
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"
 
 dependencies:
   flutter:
diff --git a/packages/ios_platform_images/ios/ios_platform_images.podspec b/packages/ios_platform_images/ios/ios_platform_images.podspec
index 485a0e5..ccbb9f9 100644
--- a/packages/ios_platform_images/ios/ios_platform_images.podspec
+++ b/packages/ios_platform_images/ios/ios_platform_images.podspec
@@ -17,9 +17,9 @@
   s.documentation_url = 'https://pub.dev/packages/ios_platform_images'
   s.source_files = 'Classes/**/*'
   s.dependency 'Flutter'
-  s.platform = :ios, '8.0'
+  s.platform = :ios, '9.0'
 
   # Flutter.framework does not contain a i386 slice. Only x86_64 simulators are supported.
-  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.0'
 end
diff --git a/packages/ios_platform_images/pubspec.yaml b/packages/ios_platform_images/pubspec.yaml
index c393885..adc8dc0 100644
--- a/packages/ios_platform_images/pubspec.yaml
+++ b/packages/ios_platform_images/pubspec.yaml
@@ -2,11 +2,11 @@
 description: A plugin to share images between Flutter and iOS in add-to-app setups.
 repository: https://github.com/flutter/plugins/tree/master/packages/ios_platform_images
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+ios_platform_images%22
-version: 0.2.0+1
+version: 0.2.0+2
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  sdk: ">=2.14.0 <3.0.0"
+  flutter: ">=2.5.0"
 
 flutter:
   plugin: