Go to latest `mypy` version in CI

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
         run: pip install -U . --upgrade-strategy eager -r requirements-test.txt
 
       - name: Run MyPy check
-        run: mypy tractor/ --ignore-missing-imports
+        run: mypy tractor/ --ignore-missing-imports --show-traceback
 
   # test that we can generate a software distribution and install it
   # thus avoid missing file issues after packaging.

requirements-test.txt

@@ -2,7 +2,7 @@ pytest
 pytest-trio
 pytest-timeout
 pdbpp
-mypy<0.920
-trio_typing<0.7.0
+mypy
+trio_typing
 pexpect
 towncrier