Run tests

Merge pull request #70 from cigar-factory/dependabot/pip/lektor-3.3.12 #222

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Run time

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Job	Run time
build (3.7)	59s
build (3.8)	23s
build (3.9)	27s
build (3.10)	26s
build (3.11)	34s
	2m 49s