Add new DNS resource record types

[Ko-]

Simply updated dnstypes with the current list at https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#dns-parameters-4. 63, 64, 65, 259 and 260 are added. I happened to come across one of these when parsing packets with scapy.

[codecov[bot]]

Codecov Report

Merging #3704 (a199b67) into master (e7f477f) will increase coverage by 0.01%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3704      +/-   ##
==========================================
+ Coverage   86.09%   86.11%   +0.01%     
==========================================
  Files         296      296              
  Lines       67240    67240              
==========================================
+ Hits        57893    57903      +10     
+ Misses       9347     9337      -10     

Impacted Files	Coverage Δ
scapy/layers/dns.py	93.12% <ø> (ø)
scapy/layers/ntp.py	84.55% <0.00%> (-0.28%)	:arrow_down:
scapy/fields.py	90.82% <0.00%> (-0.06%)	:arrow_down:
scapy/pipetool.py	84.32% <0.00%> (+0.22%)	:arrow_up:
scapy/contrib/automotive/ecu.py	94.66% <0.00%> (+0.33%)	:arrow_up:
scapy/arch/windows/__init__.py	67.73% <0.00%> (+0.37%)	:arrow_up:
scapy/layers/l2.py	76.90% <0.00%> (+0.69%)	:arrow_up:
scapy/arch/libpcap.py	69.38% <0.00%> (+1.70%)	:arrow_up:

[guedou]

Thanks for your PR!