build: updated @matrixai/workers to ^1.4.0

[ci skip]

Author: tegefaulkes

package-lock.json

@@ -33,7 +33,7 @@
     "@matrixai/errors": "^1.2.0",
     "@matrixai/logger": "^3.1.0",
     "@matrixai/resources": "^1.1.5",
-    "@matrixai/workers": "^1.3.7",
+    "@matrixai/workers": "^1.4.0",
     "node-gyp-build": "4.4.0",
     "threads": "^1.6.5"
   },