Allow to specify a proxy on curl client

[Baptouuuu]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 12.50000% with 42 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.56%. Comparing base (83912da) to head (029f3c6).
⚠️ Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/Curl/Scheduled.php	6.06%	31 Missing ⚠️
src/Curl.php	26.66%	11 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #20      +/-   ##
=============================================
- Coverage      96.40%   94.56%   -1.85%     
- Complexity       252      255       +3     
=============================================
  Files             27       27              
  Lines           2086     2134      +48     
=============================================
+ Hits            2011     2018       +7     
- Misses            75      116      +41     

☔ 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.