Apply upstream logging API patch (Closes: #955082) (!2) · Merge requests · Debian Python Team / packages / pexpect · GitLab

Switch to Sphinx logging API to fix ftbfs; Closes: #955082
- Apply fix from unbundled upstream package "sphinxcontrib_github_alt": 1f1036514578016297f5f77e706fc91b2401bcf3
- https://github.com/jupyter/sphinxcontrib_github_alt/commit/1f1036514578016297f5f77e706fc91b2401bcf3