Bug 30677: Use lookahead in regex for biblioitem replacement

Bug 30677: Use lookahead in regex for biblioitem replacement

This patch takes Andrew's suggested fix using a lookahead regex to
correct our biblio vs biblioitem table name replacements.

Please use the preceeding unit test patch proposed by Jonathan to test.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit be3bd8af8b1f2dbff33d2228eb64fa77fe9362f7)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>