Fix allowed_warnings takes no effect for the yaml test in 75_update.yml

[gaobinlong]

Description

In this PR, we have some yaml tests to verify that the update API can return deprecation warning header under some condition, but by accident, I found that the allowed_warnings command in the second test case in 75_update.yml takes no effect, change the warning message to a random string and even remove the allowed_warnings, the test case still passes, after diving deep into this, I found the reason is that we only log the deprecation log and return the warning header once for every single X-Opaque-Id, both the first update request and second update request in the yaml test file have empty X-Opaque-Id header, so the second update request receives no warning header.

This PR fixes this test bug by specifying different X-Opaque-Id header for the two update requests and changing the allowed_warning command to warnings which can verify that the API request really returns warning header.

Related Issues

No issue.

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

✅ Gradle check result for b927c72: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.01%. Comparing base (d2a1477) to head (b927c72).
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #16764      +/-   ##
============================================
- Coverage     72.16%   72.01%   -0.16%     
+ Complexity    65257    65163      -94     
============================================
  Files          5318     5318              
  Lines        303988   303988              
  Branches      43987    43987              
============================================
- Hits         219358   218902     -456     
- Misses        66674    67151     +477     
+ Partials      17956    17935      -21     

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