v3.1.2 (#3603)

## Issue Addressed

NA

## Proposed Changes

Bump versions to v3.1.2

## Additional Info

- ~~Blocked on several PRs.~~
- ~~Requires further testing.~~

Cargo.lock

@@ -439,7 +439,7 @@ dependencies = [
 
 [[package]]
 name = "beacon_node"
-version = "3.1.1"
+version = "3.1.2"
 dependencies = [
  "beacon_chain",
  "clap",
@@ -597,7 +597,7 @@ dependencies = [
 
 [[package]]
 name = "boot_node"
-version = "3.1.1"
+version = "3.1.2"
 dependencies = [
  "beacon_node",
  "clap",
@@ -3110,7 +3110,7 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "lcli"
-version = "3.1.1"
+version = "3.1.2"
 dependencies = [
  "account_utils",
  "beacon_chain",
@@ -3610,7 +3610,7 @@ dependencies = [
 
 [[package]]
 name = "lighthouse"
-version = "3.1.1"
+version = "3.1.2"
 dependencies = [
  "account_manager",
  "account_utils",