Bump symfony/css-selector from 7.3.0 to 7.4.0 in /plib/library - #150

Bugbot Analysis Progress (18s elapsed)

✅ Gathered PR context (1s)
✅ Analyzed code changes (0s)
✅ Completed bug detection — 0 potential bugs found (16s)
✅ Validation and filtering completed (0s)
✅ Posted analysis results — 0 bugs reported (0s)
✅ Analysis completed successfully (0s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_815fdba2-6947-460b-8377-af808915ab83