updated jest config

Author: timea-solid

jest.config.mjs

@@ -8,7 +8,7 @@ export default {
   },
   testPathIgnorePatterns: ['/node_modules/', '/dist/'],
   transform: {
-    '^.+\\.[tj]sx?$': ['babel-jest', { configFile: './babel.config.js' }],
+    '^.+\\.[tj]sx?$': ['babel-jest', { configFile: './babel.config.mjs' }],
   },
   transformIgnorePatterns: ['/node_modules/(?!lit-html).+\\.js'],
   setupFilesAfterEnv: ['./test/helpers/setup.ts'],