resourceloader: Use AND instead of OR for upsert conds in saveFileDependencies()

Follows-up e7b57d881a, which changed it from replace() to upsert()
but lost one of the wrapping arrays in doing so.

Previously updated many more rows than expected on Postgresql, when it
should only be updating individual rows, not all rows that match either
criteria.

SQL query before:
WHERE ((md_module = 'jquery.makeCollapsible.styles') OR (md_skin = 'vector|en-gb'))

SQL query after:
WHERE ((md_module = 'jquery.makeCollapsible.styles' AND md_skin = 'vector|en-gb'))

Not a problem on MySQL as upsert() is implemented differently there.

Bug: T222385
Change-Id: If8a458bf4543b297b3a06f31e09c0e77666bf7e6