Replace invalid \$ escape in regex

[mizdebsk]

Replace $ with \$ to avoid SyntaxWarning in Python 3.14.

Resolves rhbz#2376187

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.00%. Comparing base (3471e50) to head (b511b67).
Report is 29 commits behind head on master.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #146   +/-   ##
=======================================
  Coverage   91.00%   91.00%           
=======================================
  Files          45       45           
  Lines        3401     3401           
=======================================
  Hits         3095     3095           
  Misses        306      306           

Flag	Coverage Δ
	?

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ 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.