chore(deps): adjust dev dependencies versions for broad compatibility

- Downgraded lints and test dependencies in multiple packages to ensure consistent analyzer and test ecosystem for Dart 3.2+.
- cherrypick_generator: Bump analyzer to ^7.7.1 and mockito to ^5.4.5 for patch updates and compatibility.
- cherrypick_flutter: Lowered flutter_lints and test to versions compatible with current stable toolchain.
- talker_cherrypick_logger: Lowered lints and test for alignment with mono-repo versions.
- melos.yaml: Added clean_all script for removing generated files and build artifacts repo-wide.

No functional code changes, only dependency and tooling improvements.

melos.yaml

@@ -13,6 +13,13 @@ packages:
   - examples/postly
 
 scripts:
+  clean_all:
+    run: |
+      melos clean
+      melos exec -- rm -rf lib/**.g.dart lib/generated/
+    description: |
+      Очищает build артефакты flutter и сгенерированный код во всех пакетах.
+
   all:
     steps:
       - codegen