security/nss: update to 3.84
Changes: https://groups.google.com/a/mozilla.org/g/dev-tech-crypto/c/uV-FYp6SUr8
Changes: https://hg.mozilla.org/projects/nss/shortlog/NSS_3_84_RTM
Reported by: Repology
(cherry picked from commit c88472edb3dff4e62fe2300e19fd9005fa8ef80d)