Update gnosis capella preset (sigp#4302)

## Issue Addressed

N/A

## Proposed Changes

Gnosis preset values have been updated from previous placeholder values. This changes are required for chiado since it inherits the preset from gnosis mainnet.

- preset values update PR ref: gnosischain/configs#11

## Additional Info

N/A

Author: dapplion

consensus/types/presets/gnosis/capella.yaml

@@ -9,9 +9,9 @@ MAX_BLS_TO_EXECUTION_CHANGES: 16
 # Execution
 # ---------------------------------------------------------------
 # 2**4 (= 16) withdrawals
-MAX_WITHDRAWALS_PER_PAYLOAD: 16
+MAX_WITHDRAWALS_PER_PAYLOAD: 8
 
 # Withdrawals processing
 # ---------------------------------------------------------------
 # 2**14 (= 16384) validators
-MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP: 16384
+MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP: 8192

consensus/types/src/chain_spec.rs

@@ -843,7 +843,7 @@ impl ChainSpec {
              */
             capella_fork_version: [0x03, 0x00, 0x00, 0x64],
             capella_fork_epoch: None,
-            max_validators_per_withdrawals_sweep: 16384,
+            max_validators_per_withdrawals_sweep: 8192,
 
             /*
              * Network specific

consensus/types/src/eth_spec.rs

@@ -373,7 +373,7 @@ impl EthSpec for GnosisEthSpec {
     type MaxPendingAttestations = U2048; // 128 max attestations * 16 slots per epoch
     type SlotsPerEth1VotingPeriod = U1024; // 64 epochs * 16 slots per epoch
     type MaxBlsToExecutionChanges = U16;
-    type MaxWithdrawalsPerPayload = U16;
+    type MaxWithdrawalsPerPayload = U8;
 
     fn default_spec() -> ChainSpec {
         ChainSpec::gnosis()