This fixes CVE-2023-5388, CVE-2023-6135 and CVE-2024-0743.
* gnu/packages/nss.scm (nss) [replacement]: New field.
(nss-3.98): Rename variable to...
(nss/fixed): ... this. Make it a hidden package.
* gnu/packages/librewolf.scm (librewolf) [inputs]: Replace nss-3.98 with
nss/fixed.
Change-Id: I8cc667c53a270dfe00738bf731923f1342036624