rhel: update security data url domain

[RTann]

Red Hat security data is migrating over to the new location https://security.access.redhat.com/data, so this PR migrates all instances of redhat.com/security/data over to the new one.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.39%. Comparing base (4011b96) to head (4726b40).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1400      +/-   ##
==========================================
+ Coverage   55.37%   55.39%   +0.02%     
==========================================
  Files         282      282              
  Lines       17836    17836              
==========================================
+ Hits         9876     9881       +5     
+ Misses       6927     6923       -4     
+ Partials     1033     1032       -1     

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[crozzy]

LGTM