feat: replace direct mypy dependency with tomte[mypy] in tox config

Author: DIvyaNautiyal07

tox.ini

@@ -66,7 +66,7 @@ commands =
 skipsdist = True
 skip_install = True
 deps =
-    mypy==1.4.0
+    tomte[mypy]==0.6.1
     setuptools<=81.0.0
 commands =
     mypy mech_client/ --disallow-untyped-defs --config-file tox.ini