fix: don't use deprecated searchForIssuesUsingJqlPost() method

[jamacku]

Blocked by: MrRefactoring/jira.js#390

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 40.74%. Comparing base (0759b7e) to head (b33109b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #129   +/-   ##
=======================================
  Coverage   40.74%   40.74%           
=======================================
  Files           7        7           
  Lines         243      243           
  Branches       89       89           
=======================================
  Hits           99       99           
  Misses        118      118           
  Partials       26       26           

☔ 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.