Fix syntax error in pyproject.toml #584

Job	Run time
test-no-erdantic-version	1m 8s
test-no-erdantic-version	1m 8s
test-stable-versions (3.7, 20, 40)	1m 55s
test-stable-versions (3.7, 20, 40)	1m 55s
test-stable-versions (3.8, 20, 45)	1m 33s
test-stable-versions (3.8, 20, 45)	1m 33s
test-stable-versions (3.9, 20, 45)	1m 56s
test-stable-versions (3.9, 20, 45)	1m 56s
test-stable-versions (3.9, 20, 53)	1m 38s
test-stable-versions (3.9, 20, 53)	1m 38s
test-stable-versions (3.10, 20, 62)	1m 44s
test-stable-versions (3.10, 20, 62)	1m 44s
test-stable-versions (3.10, 20, 70)	2m 14s
test-stable-versions (3.10, 20, 70)	1m 51s
test-stable-versions (3.11, 20, 70)	1m 23s
test-stable-versions (3.11, 20, 70)	1m 23s
test-stable-versions (3.11, 21, 70)	1m 35s
test-stable-versions (3.11, 21, 70)	1m 35s
test-latest-version	2m 17s
test-latest-version	2m 17s
test-development-versions-deps	31s
test-development-versions-deps	31s
test-linter	12s
test-linter	12s
	35m 49s

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