Refactor/2025 12 ssrf attack vulnerability response

[takapi327]

Implementation Details

Fixes

Fixes #xxxxx

Pull Request Checklist

• Wrote unit and integration tests
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code formatting by scalafmt (sbt scalafmtAll command execution)
• Add copyright headers to new files

References

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.68%. Comparing base (96a964b) to head (5d1be9e).

Files with missing lines	Patch %	Lines
...edentials/InstanceProfileCredentialsProvider.scala	83.33%	1 Missing ⚠️
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Additional details and impacted files

@@               Coverage Diff                @@
##           series/0.5.x     #600      +/-   ##
================================================
- Coverage         85.05%   84.68%   -0.38%     
================================================
  Files               216      216              
  Lines             10893    11456     +563     
  Branches           1104     1160      +56     
================================================
+ Hits               9265     9701     +436     
- Misses             1628     1755     +127     

Flag	Coverage Δ
3.3.7	85.11% <83.33%> (-0.01%)	⬇️
3.7.4	85.12% <83.33%> (+0.03%)	⬆️

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