Fix test command

Author: denialhaag

pyproject.toml

@@ -312,7 +312,7 @@ build = "cp3*"
 skip = ["*-musllinux_*", "cp313t-*"]
 archs = "auto64"
 test-groups = ["test"]
-test-command = "pytest test/python"
+test-command = "pytest {project}/test/python"
 build-frontend = "build[uv]"
 enable = ["cpython-freethreading"]
 test-skip = [