Bump mkdocstrings[python-legacy] from 0.26.2 to 0.27.0 #2354

Job	Run time
EMMO documentation (test using ontodoc)	3m 14s
pytest (3.7)	4m 54s
pytest (3.8)	28s
pytest (3.9)	4m 28s
pytest (3.10)	4m 23s
pytest (3.11)	4m 30s
External / Run `pre-commit`	1m 14s
External / Build distribution package	15s
External / Build Documentation	1m 1s
External / Run `pylint` & `safety`	1m 21s
	25m 48s

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