Update Deposit to v0.5.0

eth2/types/src/deposit.rs

@@ -7,10 +7,10 @@ use test_random_derive::TestRandom;
 
 /// A deposit to potentially become a beacon chain validator.
 ///
-/// Spec v0.4.0
+/// Spec v0.5.0
 #[derive(Debug, PartialEq, Clone, Serialize, Deserialize, Encode, Decode, TreeHash, TestRandom)]
 pub struct Deposit {
-    pub branch: Vec<Hash256>,
+    pub proof: Vec<Hash256>,
     pub index: u64,
     pub deposit_data: DepositData,
 }

eth2/types/src/test_utils/testing_deposit_builder.rs

@@ -14,7 +14,7 @@ impl TestingDepositBuilder {
         let keypair = Keypair::random();
 
         let deposit = Deposit {
-            branch: vec![],
+            proof: vec![],
             index: 0,
             deposit_data: DepositData {
                 amount,