Merge pull request #80 from Workiva/batch/raise_min_dart_sdk_2_19/react_testing_library

raise_min_dart_sdk_2_19

Author: rmconsole3-wf

Diff for: pubspec.yaml

@@ -4,7 +4,7 @@ description: A Dart unit testing library for OverReact components that mimics th
 homepage: https://github.com/Workiva/react_testing_library/
 documentation: https://workiva.github.io/react_testing_library
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.19.0 <3.0.0'
 
 dependencies:
   collection: ^1.15.0-nullsafety.4