Fails on Python 3.15 #81

Description

Running Sphinx v8.2.3

Configuration error!

AttributeError: module 'typing' has no attribute 'no_type_check_decorator'

Steps to Reproduce

• Update Python versions and GitHub Actions setup #80

Actual result:

AttributeError: module 'typing' has no attribute 'no_type_check_decorator'

Expected result:

Docs.

Reproduces how often:

Always.

Version

• Operating System:
• Python: 3.15
• sphinx-pyproject:

Installation source

Other Additional Information: