v1.4.0 (#2402)

## Issue Addressed

NA

## Proposed Changes

- Bump versions and update `Cargo.lock`

## Additional Info

NA

## TODO

- [x] Ensure #2398 gets merged succesfully

common/lighthouse_version/src/lib.rs

@@ -16,7 +16,7 @@ pub const VERSION: &str = git_version!(
         // NOTE: using --match instead of --exclude for compatibility with old Git
         "--match=thiswillnevermatchlol"
     ],
-    prefix = "Lighthouse/v1.4.0-rc.0-",
+    prefix = "Lighthouse/v1.4.0-",
     fallback = "unknown"
 );