use py3.10 for docs generation

Author: abbrowne126

.github/workflows/docs.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.13"
+        python-version: "3.10"
     - name: Install nox
       run: |
         python -m pip install --upgrade setuptools pip wheel
@@ -28,7 +28,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.13"
+        python-version: "3.10"
     - name: Install nox
       run: |
         python -m pip install --upgrade setuptools pip wheel

noxfile.py

@@ -34,7 +34,7 @@
 
 MYPY_VERSION = "mypy==1.10.0"
 
-DEFAULT_PYTHON_VERSION = "3.13"
+DEFAULT_PYTHON_VERSION = "3.10"
 
 UNIT_TEST_PYTHON_VERSIONS: List[str] = [
     "3.7",
@@ -432,7 +432,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python="3.13")
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],