InvokeV3WithProof: change proof from uint32 to bytes

[avivg-starkware]

This change is 

[avivg-starkware]

p2p/proto/transaction.proto line 70 at r1 (raw file):

message InvokeV3WithProof {
    InvokeV3 invoke = 1;
    bytes proof = 2;

match changes in https://reviewable.io/reviews/starkware-libs/sequencer/13367

[avi-starkware]

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[avivg-starkware]

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[ShahakShama]

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