build(deps): bump mypy from 1.11.2 to 1.13.0 in /lib/spack/docs #761

Job	Run time
changes	2s
prechecks / validate	39s
prechecks / bootstrap-dev-rhel8	4m 29s
prechecks / import-check	2m 40s
prechecks / style	55s
prechecks / audit / package-audits (windows-latest, powershell Invoke-Expression -Command "./share/spack/qa/windows_t...	5m 9s
prechecks / audit / package-audits (ubuntu-latest, bash)	8m 40s
prechecks / audit / package-audits (macos-latest, bash)	5m 56s
all-prechecks	1s
unit-tests	0s
bootstrap	0s
coverage	0s
all	1s
	28m 32s

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