Missing Perl dependencies for Znuny 6.4

[Tronsy]

To support all functions in Znuny 6.4, you can install the following packages as well
https://github.com/samueldc/Znuny.Docker/blob/master/docker/httpd/Dockerfile#L21
libcrypt-jwt-perl libcrypt-openssl-x509-perl libical-parser-perl jq
For Jq to work, both the command line tools and the Perl module must be installed.
Just run:
cpanm Jq
after the apt install.