Fix job report test

It's not really part of the owner report, so I'm surprised it actually worked before
Probably due to the formerly exported find-first-account-for-owner

gnucash/report/reports/standard/test/test-owner-report.scm

@@ -2,6 +2,7 @@
 (gnc:module-begin-syntax (gnc:module-load "gnucash/app-utils" 0))
 (use-modules (tests test-engine-extras))
 (use-modules (gnucash reports standard owner-report))
+(use-modules (gnucash reports standard job-report))
 (use-modules (gnucash report))
 (use-modules (tests test-report-extras))
 (use-modules (srfi srfi-1))