[GP2] - adds slack webhook to receive 5xx API errors

[AimeurAmin]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.57%. Comparing base (2d01bd4) to head (ed64b3e).
⚠️ Report is 40 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4729      +/-   ##
==========================================
+ Coverage   99.54%   99.57%   +0.02%     
==========================================
  Files        1195     1217      +22     
  Lines       25977    28359    +2382     
  Branches     8421     9410     +989     
==========================================
+ Hits        25859    28238    +2379     
- Misses        118      121       +3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.