Update dependencies

Author: Josh Biddick

config/jest.config.json

@@ -1,3 +1,3 @@
 {
-  "preset": "./node_modules/@rushstack/heft/includes/jest-shared.config.json"
+  "extends": "@rushstack/heft-jest-plugin/includes/jest-shared.config.json"
 }

config/rig.json

@@ -1,7 +1,7 @@
 // The "rig.json" file directs tools to look for their config files in an external package.
 // Documentation for this system: https://www.npmjs.com/package/@rushstack/rig-package
 {
-  "$schema": "https://developer.microsoft.com/json-schemas/rig-package/rig.schema.json",
+  "$schema": "https://developer.microsoft.com/en-us/json-schemas/rig-package/rig.schema.json",
 
   /**
    * (Required) The name of the rig package to inherit from.