Review cpanfile and pin down versions of dependencies if necessary

[charsbar]

Some of the dependencies seem to need more recent perl than the one for the current PAUSE (ie. can't install on the default CentOS 7 cf. https://github.com/wolfsage/pause/pull/6).

• Mojolicious 8.50 and above requires Perl 5.20.
• Log::Dispatchouli 3.00 and above requires Perl 5.20

There may be more.

Some of the dependencies should require better versions (though they usually don't cause problems as cpan installers install the best available versions unless specified).

• CPAN::Checksums (2.13 or better?)
• IO::Socket::SSL / Net::SSLeay (to which versions?)
• Mozilla::CA / LWP::Protocol::https (missing but better be added?) https://github.com/andk/pause/pull/394
• perl (at least v5.16 for now?)

[charsbar]

• It seems DBD::SQLite, needs to be upgraded.
• Module::Faker::Dist as well

[andk]

• Module-Faker-0.025
• Email-MIME-1.953
• Email-Sender-2.600