fix: ts-jest config to process only ts

Author: dnechay

packages/apps/reputation-oracle/server/jest.config.ts

@@ -1,15 +1,17 @@
+import { createDefaultPreset } from 'ts-jest';
+
 process.env['GIT_HASH'] = 'test_value_hardcoded_in_jest_config';
 
+const jestTsPreset = createDefaultPreset({});
+
 module.exports = {
+  ...jestTsPreset,
   coverageDirectory: '../coverage',
   collectCoverageFrom: ['**/*.(t|j)s'],
   moduleFileExtensions: ['js', 'json', 'ts'],
   rootDir: 'src',
   testEnvironment: 'node',
   testRegex: '.*\\.spec\\.ts$',
-  transform: {
-    '^.+\\.(t|j)s$': 'ts-jest',
-  },
   moduleNameMapper: {
     '^uuid$': require.resolve('uuid'),
     '^typeorm$': require.resolve('typeorm'),