Update WAFv2 URLs with proper regex

[bblommers]

Follow up to #4110

[codecov-commenter]

Codecov Report

Merging #4237 (6b47c8e) into master (07bb843) will increase coverage by 40.21%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #4237       +/-   ##
===========================================
+ Coverage   54.91%   95.13%   +40.21%     
===========================================
  Files         485      485               
  Lines       54129    54129               
===========================================
+ Hits        29723    51493    +21770     
+ Misses      24406     2636    -21770     

Flag	Coverage Δ
servertests	54.91% <ø> (ø)
test_responses	32.89% <ø> (?)
unittests	95.03% <ø> (?)

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Impacted Files	Coverage Δ
moto/wafv2/urls.py	100.00% <ø> (ø)
moto/ec2/responses/route_tables.py	100.00% <0.00%> (+1.23%)	⬆️
moto/ec2/responses/network_acls.py	100.00% <0.00%> (+1.40%)	⬆️
moto/ec2/responses/elastic_ip_addresses.py	98.41% <0.00%> (+1.58%)	⬆️
moto/rds/responses.py	90.59% <0.00%> (+1.70%)	⬆️
moto/dynamodb2/parsing/validators.py	97.93% <0.00%> (+2.06%)	⬆️
moto/ec2/responses/internet_gateways.py	100.00% <0.00%> (+2.22%)	⬆️
moto/sqs/utils.py	95.34% <0.00%> (+2.32%)	⬆️
moto/ec2/responses/vpn_connections.py	89.74% <0.00%> (+2.56%)	⬆️
moto/ec2/responses/security_groups.py	89.05% <0.00%> (+3.64%)	⬆️
... and 247 more

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[github-actions]

This is now part of moto >= 2.2.6.dev23