Settle warning for json module deprecation

Author: seratch

setup.py

@@ -22,7 +22,7 @@
     "Flask-Sockets>=0.2,<1",
     "Flask>=1,<2",  # TODO: Flask-Sockets is not yet compatible with Flask 2.x
     "Werkzeug<2",  # TODO: Flask-Sockets is not yet compatible with Flask 2.x
-    "itsdangerous==2.0.1",  # TODO: Flask-Sockets is not yet compatible with Flask 2.x
+    "itsdangerous==1.1.0",  # TODO: Flask-Sockets is not yet compatible with Flask 2.x
     "Jinja2==3.0.3",  # https://github.com/pallets/flask/issues/4494
     "pytest-cov>=2,<3",
     "codecov>=2,<3",