Fix webpack license warning (#21815)
Fix webpack license warning (#21815)

#19999 introduced a indirect dependency with a license that was not on
our allowlist yet which produced this warning during webpack:

````
WARNING in License: citeproc@2.4.62 has disallowed license CPAL-1.0 OR AGPL-1.0
````

I've added both licenses to the allowed list and made it so webpack will
now abort on such license errors so that we don't miss those next time.

Co-authored-by: John Olheiser <2efb384cc32e2c1c40c2368e43e7c46e52df9a2c@gmail.com>
Co-authored-by: Lunny Xiao <0b0704cdf8f0790c6f1df1f74c38be95a8917ed2@gmail.com>
go-gitea/gitea,go-gitea/gitea,go-gitea/gitea