Merge branch 'unstable' of https://github.com/sigp/lighthouse into deneb-free-blobs

beacon_node/beacon_chain/src/block_verification.rs

@@ -933,7 +933,7 @@ impl<T: BeaconChainTypes> GossipVerifiedBlock<T> {
         // We check this *before* we load the parent so that we can return a more detailed error.
         let block = check_block_is_finalized_checkpoint_or_descendant(
             chain,
-            &chain.canonical_head.fork_choice_write_lock(),
+            &chain.canonical_head.fork_choice_read_lock(),
             block,
         )?;