contribs: gnutls: missing .pc libs

-lnettle seems to be missing, possible other flags. This breaks linking of the GnuTLS module and the 2 SRT modules.

added Component::Build system: Contribs Type::bug labels

mentioned in issue #26519 (closed)

changed the description

marked this issue as related to #26519 (closed)

mentioned in merge request !1270 (merged)

closed with commit 9de43f94

closed with merge request !1270 (merged)

added Status::fixed label

changed milestone to %4.0