Lintian tag information: excessive-priority-for-library-package (type: warning)

Description (from lintian-explain-tags)

The given package appears to be a library package, but it has "Priority"
of "required", "important", or "standard".

In general, a library package should only get pulled in on a system
because some other package depends on it; no library package needs
installation on a system where nothing uses it.

Please update debian/control and downgrade the severity to, for example,
Priority: optional.

Visibility: warning
Show-Always: no
Check: fields/priority

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