ci: Upgrade execution tests to v13.1

[chfast]

Closes #831.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.12%. Comparing base (501890b) to head (e2c1690).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #819   +/-   ##
=======================================
  Coverage   98.12%   98.12%           
=======================================
  Files         118      118           
  Lines       11843    11843           
=======================================
  Hits        11621    11621           
  Misses        222      222           

Flag	Coverage Δ
blockchaintests	61.56% <ø> (+1.83%)	:arrow_up:
statetests	61.93% <ø> (ø)
statetests-silkpre	23.33% <ø> (ø)
unittests	96.66% <ø> (ø)

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