hotfix: Fix estimate_fee

[akhercha]

Closes #

Introduced changes

• Fix bug in vrf listener where estimates fee is not done on pending block

• This PR contains breaking changes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 51.61%. Comparing base (406c23b) to head (7e0660d).
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
vrf-listener/vrf_listener/main.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #196      +/-   ##
==========================================
- Coverage   53.26%   51.61%   -1.66%     
==========================================
  Files          27        2      -25     
  Lines         950       93     -857     
==========================================
- Hits          506       48     -458     
+ Misses        444       45     -399     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.