Upgrade to v1.4.0-beta.3 (#4862)

## Issue Addressed

Makes lighthouse compliant with new kzg changes in https://github.com/ethereum/consensus-specs/releases/tag/v1.4.0-beta.3

## Proposed Changes

1. Adds new official trusted setup
2. Refactors kzg to match upstream changes in https://github.com/ethereum/c-kzg-4844/pull/377
3. Updates pre-generated `BlobBundle` to work with official trusted setup. ~~Using json here instead of ssz to account for different value of `MaxBlobCommitmentsPerBlock` in minimal and mainnet. By using json, we can just use one pre generated bundle for both minimal and mainnet. Size of 2 separate ssz bundles is approximately equal to one json bundle cc @jimmygchen~~ 
Dunno what I was doing, ssz works without any issues  
4. Stores trusted_setup as just bytes in eth2_network_config so that we don't have kzg dependency in that lib and in lcli. 


Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: realbigsean <seananderson33@GMAIL.com>

beacon_node/src/config.rs

@@ -389,10 +389,12 @@ pub fn get_config<E: EthSpec>(
     client_config.trusted_setup = context
         .eth2_network_config
         .as_ref()
-        .and_then(|config| config.kzg_trusted_setup.clone());
+        .and_then(|config| config.kzg_trusted_setup.as_ref())
+        .map(|trusted_setup_bytes| serde_json::from_slice(trusted_setup_bytes))
+        .transpose()
+        .map_err(|e| format!("Unable to read trusted setup file: {}", e))?;
 
     // Override default trusted setup file if required
-    // TODO: consider removing this when we get closer to launch
     if let Some(trusted_setup_file_path) = cli_args.value_of("trusted-setup-file-override") {
         let file = std::fs::File::open(trusted_setup_file_path)
             .map_err(|e| format!("Failed to open trusted setup file: {}", e))?;