Pin the required versions of mypy and ruff

.github/workflows/lint.yml

@@ -28,15 +28,10 @@ jobs:
     - name: Install pip
       run: python -m pip install --upgrade pip
 
-    - name: Install known good Ruff
-      run: python -m pip install ruff==0.1.9
-    - name: Lint with known good Ruff
-      run: ruff . --output-format github
+    - name: Install Ruff
+      run: python -m pip install "ruff==0.1.9"
 
-    - name: Install latest Ruff
-      run: python -m pip install --upgrade ruff
-    - name: Lint with latest Ruff
-      continue-on-error: true
+    - name: Lint with Ruff
       run: ruff . --output-format github
 
   flake8:
@@ -83,7 +78,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install --upgrade "mypy>=0.990" docutils-stubs types-requests
+        python -m pip install --upgrade "mypy==1.8.0" docutils-stubs types-requests
     - name: Type check with mypy
       run: mypy sphinx/
 

pyproject.toml

@@ -83,8 +83,8 @@ lint = [
     "flake8>=3.5.0",
     "flake8-simplify",
     "isort",
-    "ruff",
-    "mypy>=0.990",
+    "ruff==0.1.9",
+    "mypy==1.8.0",
     "sphinx-lint",
     "docutils-stubs",
     "types-requests",