ITS#9669 update heimdal URL

3 jobs for master in 44 minutes and 19 seconds (queued for 8 seconds)
Status Name Job ID Coverage
  Build
passed build-gnutls-mit-standalone-lloadd #9231

00:36:50

passed build-no-threads-no-slapd #9229

00:02:41

passed build-openssl-heimdal-lloadd #9230

00:44:18