Update tox to 4.21.2

Author: cdce8p

.github/workflows/docs.yml

@@ -38,7 +38,7 @@ jobs:
         with:
           python-version: '3.12'
       - name: Install tox
-        run: pip install tox==4.11.0
+        run: pip install tox==4.21.2
       - name: Setup tox environment
         run: tox run -e ${{ env.TOXENV }} --notest
       - name: Test

.github/workflows/test.yml

@@ -183,7 +183,7 @@ jobs:
         echo debug build; python -c 'import sysconfig; print(bool(sysconfig.get_config_var("Py_DEBUG")))'
         echo os.cpu_count; python -c 'import os; print(os.cpu_count())'
         echo os.sched_getaffinity; python -c 'import os; print(len(getattr(os, "sched_getaffinity", lambda *args: [])(0)))'
-        pip install setuptools==68.2.2 tox==4.11.0
+        pip install setuptools==68.2.2 tox==4.21.2
 
     - name: Compiled with mypyc
       if: ${{ matrix.test_mypyc }}
@@ -243,7 +243,7 @@ jobs:
           default: 3.11.1
           command: python -c "import platform; print(f'{platform.architecture()=} {platform.machine()=}');"
       - name: Install tox
-        run: pip install setuptools==68.2.2 tox==4.11.0
+        run: pip install setuptools==68.2.2 tox==4.21.2
       - name: Setup tox environment
         run: tox run -e py --notest
       - name: Test