[local_auth] Add compatibility with intl 0.20 (flutter#8217)

Nothing in `intl` 0.20 breaks `local_auth` usage, so expand the compatibility window to include 0.20.x for better ecosystem compatibility.

Fixes flutter/flutter#159591

Author: stuartmorgan-g

packages/local_auth/local_auth_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.47
+
+* Adds compatibility with `intl` 0.20.0.
+
 ## 1.0.46
 
 * Updates Java compatibility version to 11.

packages/local_auth/local_auth_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: local_auth_android
 description: Android implementation of the local_auth plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/local_auth/local_auth_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+local_auth%22
-version: 1.0.46
+version: 1.0.47
 
 environment:
   sdk: ^3.5.0
@@ -21,7 +21,7 @@ dependencies:
   flutter:
     sdk: flutter
   flutter_plugin_android_lifecycle: ^2.0.1
-  intl: ">=0.17.0 <0.20.0"
+  intl: ">=0.17.0 <0.21.0"
   local_auth_platform_interface: ^1.0.1
 
 dev_dependencies:

packages/local_auth/local_auth_darwin/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.4.2
+
+* Adds compatibility with `intl` 0.20.0.
+
 ## 1.4.1
 
 * Updates to the current version of Pigeon.

packages/local_auth/local_auth_darwin/pubspec.yaml

@@ -2,7 +2,7 @@ name: local_auth_darwin
 description: iOS implementation of the local_auth plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/local_auth/local_auth_darwin
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+local_auth%22
-version: 1.4.1
+version: 1.4.2
 
 environment:
   sdk: ^3.3.0
@@ -24,7 +24,7 @@ flutter:
 dependencies:
   flutter:
     sdk: flutter
-  intl: ">=0.17.0 <0.20.0"
+  intl: ">=0.17.0 <0.21.0"
   local_auth_platform_interface: ^1.0.1
 
 dev_dependencies: