build(deps): bump mypy from 1.11.2 to 1.14.1 in /lib/spack/docs #788

Job	Run time
changes	2s
prechecks / validate	37s
prechecks / bootstrap-dev-rhel8	4m 24s
prechecks / style	54s
prechecks / import-check	2m 38s
prechecks / audit / package-audits (windows-latest, powershell Invoke-Expression -Command "./share/spack/qa/windows_t...	5m 5s
prechecks / audit / package-audits (ubuntu-latest, bash)	8m 41s
prechecks / audit / package-audits (macos-latest, bash)	5m 9s
all-prechecks	1s
bootstrap	0s
unit-tests	0s
coverage	0s
all	1s
	27m 32s

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