v2.4.0 (#3360)

## Issue Addressed

NA

## Proposed Changes

Bump versions to v2.4.0

## Additional Info

Blocked on:

- ~~#3349~~
- ~~#3347~~

Cargo.lock

@@ -351,7 +351,7 @@ dependencies = [
 
 [[package]]
 name = "beacon_node"
-version = "2.3.2-rc.0"
+version = "2.4.0"
 dependencies = [
  "beacon_chain",
  "clap",
@@ -508,7 +508,7 @@ dependencies = [
 
 [[package]]
 name = "boot_node"
-version = "2.3.2-rc.0"
+version = "2.4.0"
 dependencies = [
  "beacon_node",
  "clap",
@@ -2983,7 +2983,7 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "lcli"
-version = "2.3.2-rc.0"
+version = "2.4.0"
 dependencies = [
  "account_utils",
  "bls",
@@ -3481,7 +3481,7 @@ dependencies = [
 
 [[package]]
 name = "lighthouse"
-version = "2.3.2-rc.0"
+version = "2.4.0"
 dependencies = [
  "account_manager",
  "account_utils",