perl5 modules: problems with livecheck versions

[mojca (Mojca Miklavec)]

After switching to livecheck from metacpan in r149129 I'm experiencing problems with figuring out the latest version number at least for the following modules (but there may be more):

• p5-business-issn seems to have been updated (port version: 1.001, new version: 0.91)
• p5-class-dbi-pg seems to have been updated (port version: 0.09, new version: 0.08)
• p5-config-simple seems to have been updated (port version: 4.59, new version: 4.58)
  • ​https://rt.cpan.org/Public/Bug/Display.html?id=113751
• p5-list-uniq seems to have been updated (port version: v0.21.0, new version: 0.20)
  • ​https://rt.cpan.org/Public/Bug/Display.html?id=106262
• p5-net-senderbase seems to have been updated (port version: 1.02, new version: 1.01)
• p5-svg-graph seems to have been updated (port version: 0.04, new version: 0.02)
• p5-sys-meminfo seems to have been updated (port version: 0.98, new version: 0.91)

This needs two-fold handling:

• the code should probably throw an error (see also r127797)
• we should identify the reason behind the problem for each individual module and report it upstream, as is the case for ​Config::Simple

See also #51535.