Bump version to 1.2.0

pubspec.lock

@@ -986,7 +986,7 @@ packages:
       name: webview_flutter_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.3"
+    version: "2.8.4"
   webview_flutter_platform_interface:
     dependency: transitive
     description:
@@ -1007,7 +1007,7 @@ packages:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0"
+    version: "2.5.1"
   xdg_directories:
     dependency: transitive
     description:

pubspec.yaml

@@ -15,7 +15,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 1.1.0+17
+version: 1.2.0+18
 
 environment:
   sdk: ">=2.15.0 <3.0.0"