Update .github/PULL_REQUEST_TEMPLATE.md
Update .github/PULL_REQUEST_TEMPLATE.md

Co-Authored-By: Morgante Pell <dc24fe79b12509b3ecaa16577179576288deda72@morgante.net>
forseti-security/forseti-security,forseti-security/forseti-security,forseti-security/forseti-security,forseti-security/forseti-security