fixup config

Author: neutrinoceros

pyproject.toml

@@ -48,7 +48,10 @@ skip = [
     "cp39-*",
     "cp314t-*",
 ]
-test-requires = "pytest"
+test-requires = [
+    "pytest",
+    "pytest-mpl",
+]
 test-command = "pytest --mpl {project}/tests"
 environment = { PIP_ONLY_BINARY = ":all:" }