fix(deps): update dependency get_it to v8 (#49)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pubspec.yaml

@@ -10,7 +10,7 @@ environment:
 dependencies:
   args: ^2.4.2
   freezed_annotation: ^2.1.0
-  get_it: ^7.6.0
+  get_it: ^8.0.0
   mockito: ^5.4.3
   mustache_template: ^2.0.0
   path: ^1.8.1