security/nettle: Update to 3.8

- Remove ELFv2 patch since upstream adds configure test for ELFV2_ABI [1]

Changes:	https://git.lysator.liu.se/nettle/nettle/-/blob/master/NEWS
Reference:	https://git.lysator.liu.se/nettle/nettle/-/commit/c7cf19390dcb0e9792fc23b0c935c1fe5e4f91e1 [1]