Log Message:
pkgtools/pkglint4: update to 4.193.2

Changes since 4.193.1:

Disabled unreliable check about possible typos in variable names. For
example, in pkgtools/url2pkg the variable TEST_DEPENDS was flagged even
though it is well-known.

Disabled unreliable check about unknown shell commands. For example, in
pkgtools/pkglint4 all commands from ${PREFIX} are ok, but were still
flagged.