chore: bump bundle size restriction temporarily

This will come down again when we switch to the new version of Peer ID with async/await (since it will use the same `multihashing-async` as the included IPLD formats):

```js
[email protected] /Users/alan/Code/protocol-labs/js-ipfs-http-client
├─┬ [email protected]
│ └── [email protected] 
├─┬ [email protected]
│ └── [email protected]  deduped
└─┬ [email protected]
  └─┬ [email protected]
    ├─┬ [email protected]
    │ └── [email protected] 
    └── [email protected] 
```

Author: Alan Shaw

.aegir.js

@@ -5,7 +5,7 @@ const createServer = require('ipfsd-ctl').createServer
 const server = createServer()
 
 module.exports = {
-  bundlesize: { maxSize: '236kB' },
+  bundlesize: { maxSize: '237kB' },
   webpack: {
     resolve: {
       mainFields: ['browser', 'main']