correct policy issuer in staging for release-dashboard-api to ticino

[dd-anmejia]

What does this PR do?
change the policy issuer for release-dashboard-api to ticino since its the one supported by RAPID in staging

Describe how you validated your changes
can only test the policy works after merging changes

[datadog-datadog-prod-us1]

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 44.10% (+0.76%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: b71d476 | Docs | Datadog PR Page | Give us feedback!}

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.78%. Comparing base (b1ebe71) to head (b71d476).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3071      +/-   ##
==========================================
+ Coverage   43.00%   43.78%   +0.78%     
==========================================
  Files         340      343       +3     
  Lines       29330    30441    +1111     
==========================================
+ Hits        12614    13330     +716     
- Misses      15892    16256     +364     
- Partials      824      855      +31     

Flag	Coverage Δ
unittests	43.78% <ø> (+0.78%)	⬆️

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see 21 files with indirect coverage changes

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