gnu: perl: Add missing dependencies on Module::Install.
Perl 5.26 and later does not provide this module.
* gnu/packages/databases.scm (perl-sql-abstract)[native-inputs]: Add PERL-MODULE-INSTALL.
* gnu/packages/perl.scm (perl-moosex-emulate-class-accessor-fast,
perl-file-zglob, perl-object-signature, perl-test-utf8, perl-time-duration,
perl-benchmark-timer, perl-class-accessor-grouped,
perl-class-c3-componentised, perl-term-encoding)[native-inputs]: Likewise.
* gnu/packages/web.scm (perl-http-parser-xs, perl-uri-template,
perl-www-curl)[native-inputs]: Likewise.
* gnu/packages/xml.scm (perl-xml-atom)[native-inputs]: Likewise.
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