Bug in the code version.json version 5.0.0

On ./lib/version.js

```js
module.exports = require("../package").version
```

should to be

```js
module.exports = require("../package.json").version
```

pusher-http-node@5.0.0

Compilation error in webpack 5 which motivate opening this issue : 

```txt
ModuleNotFoundError: Module not found: Error: Can't resolve '../package' in
```