Issue #398 - Upgrade the Gecko driver to version 0.30.0

Author: ppodgorsek

Dockerfile

@@ -40,7 +40,7 @@ ENV DATETIMETZ_VERSION 1.0.6
 ENV FAKER_VERSION 5.0.0
 ENV FIREFOX_VERSION 91.7
 ENV FTP_LIBRARY_VERSION 1.9
-ENV GECKO_DRIVER_VERSION v0.26.0
+ENV GECKO_DRIVER_VERSION v0.30.0
 ENV IMAP_LIBRARY_VERSION 0.4.2
 ENV PABOT_VERSION 2.5.2
 ENV REQUESTS_VERSION 0.9.2