fix(prover): Submit L2 signal service root instead of L1 when submitting proof

[cyberhorsey]

No description provided.

[codecov]

Codecov Report

Merging #219 (f1cbab4) into main (21d7e78) will decrease coverage by 0.46%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##             main     #219      +/-   ##
==========================================
- Coverage   53.07%   52.61%   -0.46%     
==========================================
  Files          36       36              
  Lines        3416     3419       +3     
==========================================
- Hits         1813     1799      -14     
- Misses       1367     1384      +17     
  Partials      236      236              

Impacted Files	Coverage Δ
pkg/rpc/methods.go	35.29% <0.00%> (ø)
prover/proof_producer/special_proof_producer.go	7.76% <0.00%> (-0.24%)	⬇️
prover/proof_submitter/valid_proof_submitter.go	61.50% <50.00%> (ø)
...ver/anchor_tx_constructor/anchor_tx_constructor.go	53.52% <100.00%> (ø)

... and 1 file with indirect coverage changes

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