Update pyproject.toml

Author: chrisjsewell

pyproject.toml

@@ -43,7 +43,7 @@ compare = [
     "markdown-it-pyrs",
 ]
 linkify = ["linkify-it-py>=1,<3"]
-plugins = ["mdit-py-plugins"]
+plugins = ["mdit-py-plugins>=0.5.0"]
 rtd = [
     "mdit-py-plugins",
     "myst-parser",