chore(deps): update dependency future to v0.18.3

__tests__/data/requirements-linux.txt

@@ -1,7 +1,7 @@
 certifi==2020.6.20
 chardet==3.0.4
 docutils==0.16
-idna==3.11
+idna==3.7
 Kivy==2.0.0rc3
 Kivy-Garden==0.1.4
 packaging==20.7

__tests__/data/requirements.txt

@@ -6,9 +6,9 @@ chardet==3.0.4
 
 docutils==0.16
 
-future==0.18.2; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'
+future==0.18.3; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2'
 
-idna==3.11
+idna==3.7
 
 itsdangerous==1.1.0