chore: extend e2e tests' timeout

[czeslavo]

Drop the e2e tests job's timeout set from organization's vars as it's not enough: https://github.com/Kong/kubernetes-testing-framework/actions/runs/9550375317/job/26324041269

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.01%. Comparing base (1204d4d) to head (1622879).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1106      +/-   ##
==========================================
- Coverage   60.21%   60.01%   -0.20%     
==========================================
  Files          50       50              
  Lines        4079     4082       +3     
==========================================
- Hits         2456     2450       -6     
- Misses       1313     1321       +8     
- Partials      310      311       +1     

Flag	Coverage Δ
integration-test	60.01% <ø> (-0.20%)	⬇️

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.