fix: use python -m to invoke ruff and mypy in CI

.gitea/workflows/ci.yml

@@ -29,12 +29,12 @@ jobs:
       - name: Run type checking
         run: |
           pip install mypy
-          mypy src/codexchange/ --ignore-missing-imports
+          python -m mypy src/codexchange/ --ignore-missing-imports
 
       - name: Run linting
         run: |
           pip install ruff
-          ruff check src/codexchange/ tests/
+          python -m ruff check src/codexchange/ tests/
 
   lint:
     runs-on: ubuntu-latest
@@ -50,7 +50,7 @@ jobs:
         run: pip install ruff
 
       - name: Run linter
-        run: ruff check src/codexchange/ tests/
+        run: python -m ruff check src/codexchange/ tests/
 
   typecheck:
     runs-on: ubuntu-latest
@@ -66,4 +66,4 @@ jobs:
         run: pip install mypy
 
       - name: Run type checker
-        run: mypy src/codexchange/ --ignore-missing-imports
+        run: python -m mypy src/codexchange/ --ignore-missing-imports