Update gunicorn requirement from ~=20.0.4 to ~=20.1.0

Updates the requirements on [gunicorn](https://github.com/benoitc/gunicorn) to permit the latest version.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@20.0.4...20.1.0)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.in

@@ -6,7 +6,7 @@ Flask~=1.1.4
 csh_ldap~=2.3.1
 ddtrace==1.1.4
 flask_sqlalchemy~=2.5.1
-gunicorn~=20.0.4
+gunicorn~=20.1.0
 mypy==0.931
 onesignal-sdk~=1.0.0
 psycopg2-binary~=2.9.3

requirements.txt

@@ -60,7 +60,9 @@ flask-sqlalchemy==2.5.1
     #   flask-migrate
 future==0.18.2
     # via pyjwkest
-gunicorn==20.0.4
+greenlet==1.1.2
+    # via sqlalchemy
+gunicorn==20.1.0
     # via -r requirements.in
 idna==3.3
     # via requests
@@ -176,8 +178,6 @@ wheel==0.37.1
     # via pip-tools
 wrapt==1.12.1
     # via astroid
-zipp==3.8.0
-    # via importlib-resources
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip