Added cpanm to dependencies

Author: droberts-ctrlo

.github/workflows/install.sh

@@ -25,7 +25,7 @@ apt-get install -y libwww-form-urlencoded-xs-perl libwww-mechanize-chrome-perl l
 apt-get install -y postgresql-client starman perl libtest-tempdir-tiny-perl
 if [[ !(-z "INTEGRATION_TESTS") ]]
 then
-    apt install -y unzip gconf2 libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libnss3 libxss1 libasound2 libxtst6 xauth xvfb
+    apt install -y unzip gconf2 libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libnss3 libxss1 libasound2 libxtst6 xauth xvfb cpanminus
     cpanm --notest WebDriver::Tiny
 
     # We're running integration tests, so we need to set up browsers