community/mustach: upgrade to 1.2.10
Compare changes
https://gitlab.com/jobol/mustach/-/releases/1.2.10
https://gitlab.com/jobol/mustach/-/releases/1.2.9
This should resolve a rebuild error due to a failed test found on the 3.21 builders (s390x error log).
Also adjust $CARCH
-based checkdepends for lint.