Upgrade iron session version (#1251)

>[!note]
>This is against the `version-8` branch, which drops support for Node
16, allowing for this update to happen.

Update to latest version of iron-session.

Does this require changes to the WorkOS Docs? E.g. the [API
Reference](https://workos.com/docs/reference) or code snippets need
updates.

```
[ ] Yes
```

If yes, link a related docs PR and add a docs maintainer as a reviewer.
Their approval is required.

Author: nicknisi

.gitignore

@@ -4,4 +4,4 @@ yarn-error.log
 lib/
 .DS_Store
 yarn.lock
-.idea/
+.idea/

jest-transform-esm.js

@@ -0,0 +1,9 @@
+const babelJest = require('babel-jest');
+
+module.exports = babelJest.createTransformer({
+  presets: [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ],
+  plugins: ['@babel/plugin-transform-modules-commonjs'],
+});

jest.config.js

@@ -9,7 +9,11 @@ module.exports = {
   setupFilesAfterEnv: ['./setup-jest.ts'],
   transform: {
     '^.+\\.ts?$': 'ts-jest',
+    '^.+\\.m?js$': '<rootDir>/jest-transform-esm.js',
   },
+  transformIgnorePatterns: [
+    '/node_modules/(?!(iron-session|uncrypto|cookie-es)/).+\\.m?js$',
+  ],
   moduleNameMapper: {
     '^jose': require.resolve('jose'),
   },