Fix dependency update (#897)

Fix #891

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: mokuzon

requirements-dev.txt

@@ -3,8 +3,10 @@
 tox==4.32.0 ; python_version >= "3.10"
 tox==4.32.0 ; python_version < "3.10"
 wheel==0.46.1
-Sphinx==9.0.4
-sphinx-rtd-theme==3.0.2
+Sphinx==9.0.4 ; python_version >= "3.11"
+Sphinx==7.4.7 ; python_version < "3.11"
+sphinx-rtd-theme==3.1.0rc1 ; python_version >= "3.11"
+sphinx-rtd-theme==3.0.2 ; python_version < "3.11"
 pypandoc==1.16.2
 twine==6.2.0
 black==25.12.0