add dev_dependency:pedantic to all plugins (#2543)

packages/webview_flutter/CHANGELOG.md

diff --git a/packages/webview_flutter/CHANGELOG.md b/packages/webview_flutter/CHANGELOG.md
index c856afe..cec384d 100644
--- a/packages/webview_flutter/CHANGELOG.md
+++ b/packages/webview_flutter/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.3.19+8
+
+* Make the pedantic dev_dependency explicit.
+
 ## 0.3.19+7
 
 * Remove the Flutter SDK constraint upper bound.

packages/webview_flutter/example/pubspec.yaml

diff --git a/packages/webview_flutter/example/pubspec.yaml b/packages/webview_flutter/example/pubspec.yaml
index ae1d71c..f5842fc 100644
--- a/packages/webview_flutter/example/pubspec.yaml
+++ b/packages/webview_flutter/example/pubspec.yaml
@@ -1,8 +1,6 @@
 name: webview_flutter_example
 description: Demonstrates how to use the webview_flutter plugin.
 
-version: 1.0.4
-
 environment:
   sdk: ">=2.0.0-dev.68.0 <3.0.0"
 
@@ -18,6 +16,7 @@
   flutter_driver:
     sdk: flutter
   e2e: "^0.2.0"
+  pedantic: ^1.8.0
 
 flutter:
   uses-material-design: true

packages/webview_flutter/pubspec.yaml

diff --git a/packages/webview_flutter/pubspec.yaml b/packages/webview_flutter/pubspec.yaml
index 97d143a..d19ed47 100644
--- a/packages/webview_flutter/pubspec.yaml
+++ b/packages/webview_flutter/pubspec.yaml
@@ -1,6 +1,6 @@
 name: webview_flutter
 description: A Flutter plugin that provides a WebView widget on Android and iOS.
-version: 0.3.19+7
+version: 0.3.19+8
 homepage: https://github.com/flutter/plugins/tree/master/packages/webview_flutter
 
 environment:
@@ -16,6 +16,7 @@
     sdk: flutter
   flutter_driver:
     sdk: flutter
+  pedantic: ^1.8.0
 
 flutter:
   plugin: