fix: hide Unflag package from non-maintainers

Add jinja2.ext.do extention to allow jinja statements to not print
'None'
https://jinja.palletsprojects.com/en/3.0.x/templates/#expression-statement

Closes: #364
Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>
2 jobs for maintainers-only-unflag in 3 minutes and 2 seconds (queued for 4 seconds)