actions: Check with 3 type checkers

you will certainly not regret checking with 3 type checkers.

.github/workflows/test.yml

@@ -55,10 +55,17 @@ jobs:
         python -mpip install wheel
         python -mpip install -r requirements-dev.txt
 
-    - name: Check stubs
+    - name: Check stubs with mypy
       if: (! startsWith(matrix.python-version, 'pypy-'))
       run: make mypy PYTHON=python
 
+    - name: Check stubs with pyrefly
+      if: (! startsWith(matrix.python-version, 'pypy-'))
+      run: make pyrefly PYTHON=python
+
+    - name: Check stubs with pyright
+      if: (! startsWith(matrix.python-version, 'pypy-'))
+      run: make pyright PYTHON=python
 
   test:
     strategy:

requirements-dev.txt

@@ -7,6 +7,8 @@ build
 click
 coverage >= 7.10.3
 mypy; implementation_name=="cpython"
+pyright; implementation_name=="cpython"
+pyrefly; implementation_name=="cpython"
 click>=8.1.5; implementation_name=="cpython"
 leapseconddata
 platformdirs