chore: use 'transform' for the ts-jest config

They've deprecated the 'globals' way of setting options.

Refs kulshekhar/ts-jest#3780

Author: thewilkybarkid

jest.config.js

@@ -1,13 +1,15 @@
 module.exports = {
-  globals: {
-    'ts-jest': {
-      diagnostics: false,
-      isolatedModules: true,
-    },
-  },
   injectGlobals: false,
-  preset: 'ts-jest',
   testEnvironment: 'node',
   roots: ['./src/', './test/'],
   moduleFileExtensions: ['ts', 'js'],
+  transform: {
+    '^.+\\.ts$': [
+      'ts-jest',
+      {
+        diagnostics: false,
+        isolatedModules: true,
+      },
+    ],
+  },
 }