Bump pygments from 2.19.2 to 2.20.0 #102

Job	Run time
Prepare tests for Python pypy3.11	1m 13s
Prepare tests for Python pypy3.10	3m 54s
Prepare tests for Python 3.11 (Linux)	22s
Prepare tests for Python 3.10 (Windows)	48s
Prepare tests for Python 3.13 (Linux)	20s
Prepare tests for Python 3.11 (Windows)	48s
Prepare tests for Python 3.13 (Windows)	42s
Prepare tests for Python 3.12 (Linux)	28s
Prepare tests for Python 3.10 (Linux)	24s
Prepare tests for Python 3.9 (Windows)	1m 28s
Prepare tests for Python 3.12 (Windows)	54s
Prepare tests for Python 3.9 (Linux)	36s
Prepare base dependencies	53s
Run tests Python 3.9 (Linux)	19s
Run tests Python 3.13 (Linux)	13s
Run tests Python 3.10 (Linux)	9s
Run tests Python 3.12 (Linux)	10s
Run tests Python 3.11 (Linux)	16s
Run tests Python 3.11 (Windows)	35s
Run tests Python 3.9 (Windows)	1m 3s
Run tests Python 3.10 (Windows)	38s
Run tests Python 3.12 (Windows)	33s
Run tests Python 3.13 (Windows)	26s
Run tests Python ${{ matrix.python-version }}	0s
	17m 12s

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