Add support for Jedi 0.20 (#718)

Author: ccordoba12

pyproject.toml

@@ -16,7 +16,7 @@ requires-python = ">=3.9"
 dependencies = [
     "docstring-to-markdown",
     "importlib_metadata>=4.8.3;python_version<\"3.10\"",
-    "jedi>=0.17.2,<0.20.0",
+    "jedi>=0.17.2,<0.21.0",
     "pluggy>=1.0.0",
     "python-lsp-jsonrpc>=1.1.0,<2.0.0",
     "ujson>=3.0.0",