fix: Downgrade to marshmallow<4

TypeError: Field.__init__() got an unexpected keyword argument
'minLength'

Author: amotl

pyproject.toml

@@ -64,6 +64,7 @@ dependencies = [
     "jsonpath-ng>=1.6.1, <2",
     "Mako>=1.2.2",
     "markdown>=3.0",
+    "marshmallow<4",
     "msgpack>=1.0.0, <1.1",
     "nh3>=0.2.11, <0.3",
     "numpy==1.23.5",