feat: update bridge and operator abis

[troggy]

to conform to
leapdao/leap-contracts#204
leapdao/leap-contracts#206

[codecov]

Codecov Report

Merging #281 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #281   +/-   ##
=======================================
  Coverage   94.57%   94.57%           
=======================================
  Files          62       62           
  Lines         922      922           
  Branches      173      173           
=======================================
  Hits          872      872           
  Misses         46       46           
  Partials        4        4

Impacted Files	Coverage Δ
src/abis/bridgeAbi.js	100% <ø> (ø)	⬆️

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[troggy]

Not needed anymore (no changes except dropped ExitStartedV2 which we rather keep in ABI for compatibility)

[troggy]

verified this PR with contract changes all together leapdao/leap-contracts#204, leapdao/leap-contracts#205, leapdao/leap-contracts#206

Procedure:

deployed leap-contracts from master (before the changes)
ran leap-node with updated ABIs
setValidator
deposit some money on plasma
push till next period
do exit (deposit exit)
deposit more
make a transfer
push till next period
do exit (normal exit)
upgrade Bridge and ExitHandler contracts
deposit
push till next period
do exit (deposit exit)
deposit
transfer
push till next period
try to exit (normal exit)