chore(deps): update dependency parsy to v1.4.0

| datasource | package | from  | to    |
| ---------- | ------- | ----- | ----- |
| pypi       | parsy   | 1.1.0 | 1.4.0 |

Author: renovate-bot

setup.py

@@ -47,7 +47,7 @@
     ],
     python_requires=">=3.6",
     install_requires=[
-        "parsy==1.1.0",
+        "parsy==1.4.0",
         "attrs>=17.2.0",
         "click>=6.5",
         "toml>=0.9.4",