[image_picker] NNBD stable (#3579)

diff --git a/packages/image_picker/image_picker/CHANGELOG.md b/packages/image_picker/image_picker/CHANGELOG.md
index c6b29f2..97aba45 100644
--- a/packages/image_picker/image_picker/CHANGELOG.md
+++ b/packages/image_picker/image_picker/CHANGELOG.md
@@ -1,4 +1,5 @@
-## 0.7.0-nullsafety
+## 0.7.0
+
 * Migrate to nullsafety
 * Breaking Changes:
     * Removed the deprecated methods: `ImagePicker.pickImage`, `ImagePicker.pickVideo`,
diff --git a/packages/image_picker/image_picker/example/pubspec.yaml b/packages/image_picker/image_picker/example/pubspec.yaml
index eed223c..ceafc31 100755
--- a/packages/image_picker/image_picker/example/pubspec.yaml
+++ b/packages/image_picker/image_picker/example/pubspec.yaml
@@ -6,7 +6,7 @@
   video_player: ^2.0.0-nullsafety.7
   flutter:
     sdk: flutter
-  flutter_plugin_android_lifecycle: ^2.0.0-nullsafety.2
+  flutter_plugin_android_lifecycle: ^2.0.0
   image_picker:
     # When depending on this package from a real application you should use:
     #   image_picker: ^x.y.z
@@ -26,5 +26,5 @@
   uses-material-design: true
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.12.0-259.9.beta <3.0.0"
   flutter: ">=1.10.0"
diff --git a/packages/image_picker/image_picker/pubspec.yaml b/packages/image_picker/image_picker/pubspec.yaml
index eab7f7c..96881e6 100755
--- a/packages/image_picker/image_picker/pubspec.yaml
+++ b/packages/image_picker/image_picker/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Flutter plugin for selecting images from the Android and iOS image
   library, and taking new pictures with the camera.
 homepage: https://github.com/flutter/plugins/tree/master/packages/image_picker/image_picker
-version: 0.7.0-nullsafety
+version: 0.7.0
 
 flutter:
   plugin:
@@ -16,11 +16,10 @@
 dependencies:
   flutter:
     sdk: flutter
-  flutter_plugin_android_lifecycle: ^2.0.0-nullsafety.2
-  image_picker_platform_interface: ^2.0.0-nullsafety
+  flutter_plugin_android_lifecycle: ^2.0.0
+  image_picker_platform_interface: ^2.0.0
 
 dev_dependencies:
-  video_player: ^2.0.0-nullsafety.7
   flutter_test:
     sdk: flutter
   integration_test:
@@ -30,5 +29,5 @@
   plugin_platform_interface: ">=1.0.0 <3.0.0"
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.12.0-259.9.beta <3.0.0"
   flutter: ">=1.10.0"