nettle: Update to version 3.10.2

nettle: Update to version 3.10.2

- Update from version 3.10.1 to 3.10.2
- Update of rootfile
- Changelog
    3.10.2
	* Fix missing prototypes in getopt.h and getopt.c, affecting
	  non-glibc systems, and causing compile errors with C23
	  compilers that require prototypes, e.g., gcc-15.
	* For powerpc64, avoid using v9 (ISA v3.0) instructions
	  lxvb16x, lxv and stxv in powerpc64/p8/ files.
	* For powerpc64, add configure check for __VSX__, and disable
	  use of assembly if not defined. Nettle's powerpc64 assembly
	  requires at least v7 (ISA v2.06).

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>