dns: add dns.rcode keyword v6 #8491

Job	Run time
Prepare dependencies	1m 11s
Prepare cbindgen	24s
AlmaLinux 9	12m 44s
AlmaLinux 8	6m 37s
Fedora 38 (clang, debug, asan, wshadow, rust-strict, systemd)	57m 42s
AlmaLinux 9 (no jansson)	1m 9s
AlmaLinux 9 Test Templates	4m 55s
Fedora 38 (gcc, debug, asan, wshadow, rust-strict)	7m 54s
Fedora 38 (Suricata Verify codecov)	7m 18s
Fedora 39 (clang, debug, asan, wshadow, rust-strict, systemd)	7m 56s
Fedora 39 (gcc, debug, asan, wshadow, rust-strict)	8m 5s
Fedora 39 (non-root, debug, clang, asan, wshadow, rust-strict, systemd)	7m 24s
Ubuntu 22.04 (fuzz corpus coverage)	9m 7s
Ubuntu 22.04 (unittests coverage)	6m 11s
Debian 10	7m 47s
Debian 11 (xdp)	7m 36s
Debian 12 Dist Builder	4m 6s
Debian 12	26m 28s
Debian 12 MSRV	22m 24s
MacOS Latest	32m 15s
Ubuntu 20.04 (-DNDEBUG)	10m 19s
Ubuntu 22.04 (Debug Validation)	10m 27s
Ubuntu 22.04 (DPDK Build) (22.11.3)	14m 49s
Ubuntu 22.04 (Fuzz)	6m 35s
Ubuntu 22.04 (DPDK Build) (21.11.5)	12m 40s
Ubuntu 22.04 (DPDK Build) (20.11.9)	11m 22s
Ubuntu 22.04 (Netmap build)	3m 39s
Ubuntu 22.04 (DPDK Build) (19.11.14)	9m 54s
Windows MSYS2 MINGW64 (libpcap)	24m 14s
Windows MSYS2 MINGW64 (NPcap)	24m 38s
Windows MSYS2 MINGW64 (WinDivert)	12m 16s
CentOS Stream 8	5m 39s
CentOS 7	15m 4s
CentOS Stream 9	5m 46s
Ubuntu 20.04 (unsupported rust)	1m 9s
	6h 47m 44s

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