Remove secure_wan test from the list of failing tests

[Tempate]

The PR eProsima/Fast-DDS#5071 fixes a known issue in Fast-DDS's security over WAN. This issue made the secure_wan test fail, forcing us to place it in the list of failing tests (TEST_XFAIL). Since the test should now pass, we will remove it from the list of failing tests.

Merge after:

• [20181] Hotfix: Secure simple participants with initialpeers over TCP match Fast-DDS#5071
• [20170] Limit permissions and include missing certificates in security tests #418

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 30.24%. Comparing base (72f9b43) to head (b33822e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #462      +/-   ##
==========================================
- Coverage   31.14%   30.24%   -0.90%     
==========================================
  Files          16       16              
  Lines         594      562      -32     
  Branches      321      298      -23     
==========================================
- Hits          185      170      -15     
+ Misses        213      205       -8     
+ Partials      196      187       -9     

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[juanlofer-eprosima]

LGTM