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

Reviewed-on: #1

__tests__/data/requirements.txt

@@ -6,7 +6,7 @@ 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==3.7
 

renovate.json

@@ -0,0 +1,3 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+}