ISSUE-338: fix file permissions

Author: tatevikg1

.github/workflows/main.yml

@@ -79,6 +79,7 @@ jobs:
           cp -fv tests/ci/config.php public_html/lists/config/config.php
           mkdir -p output/screenshots
           mkdir -p build/mails
+          chmod -R 777 output/screenshots build/mails
           ./bin/start-selenium > output/selenium.log 2>&1 &
           sleep 10
           sudo php -S 0.0.0.0:80 -t public_html > /dev/null 2>&1 &