Add support for \mathit{\Gamma} etc... in PDF output #575

Job	Run time
Python 3.13-dev (Docutils 0.20)	3m 13s
Python 3.13-dev (Docutils 0.20; free-threaded)	3m 56s
Python 3.13-dev (Docutils 0.21)	3m 3s
Python 3.13-dev (Docutils 0.21; free-threaded)	3m 53s
Python 3.10 (Docutils 0.20)	2m 55s
Python 3.10 (Docutils 0.21)	2m 58s
Python 3.11 (Docutils 0.20)	2m 30s
Python 3.11 (Docutils 0.21)	2m 31s
Python 3.12 (Docutils 0.20)	3m 4s
Python 3.12 (Docutils 0.21)	2m 45s
Docutils HEAD	3m 20s
LaTeX	4m 30s
Oldest supported	3m 32s
Windows	5m 59s
Coverage	0s
	48m 9s

Provide feedback