Update requests

Author: Dadoum

dub.selections.json

@@ -33,7 +33,7 @@
 		"plist-d": {"version":"6fdaa60d62bbf7c55044069e8f03cbe74401c444","repository":"git+https://github.com/Dadoum/libplist-d.git"},
 		"progress": "5.0.2",
 		"provision": {"version":"645d56d8e8c86c057893321843db00b21f1aaeb2","repository":"git+https://github.com/Dadoum/Provision.git"},
-		"requests": "2.1.2",
+		"requests": "2.2.0",
 		"sideloader": {"path":"../../"},
 		"silly": "1.2.0-dev.2",
 		"slf4d": "2.4.3",