[3.20] community/rt4: security upgrade to 4.4.7

• https://docs.bestpractical.com/release-notes/rt/4.4.5
• https://docs.bestpractical.com/release-notes/rt/4.4.6
• https://docs.bestpractical.com/release-notes/rt/4.4.7
• sort dependencies alphabetically
• add dependency perl-parallel-forkmanager