Issue #264 - Upgrade the Requests library to version 0.6.6

Author: ppodgorsek

Dockerfile

@@ -33,7 +33,7 @@ ENV FTP_LIBRARY_VERSION 1.9
 ENV GECKO_DRIVER_VERSION v0.26.0
 ENV IMAP_LIBRARY_VERSION 0.3.0
 ENV PABOT_VERSION 1.2.1
-ENV REQUESTS_VERSION 0.6.5
+ENV REQUESTS_VERSION 0.6.6
 ENV ROBOT_FRAMEWORK_VERSION 3.1.2
 ENV SELENIUM_LIBRARY_VERSION 4.3.0
 ENV SSH_LIBRARY_VERSION 3.4.0