Replace single with double quote inside pair of single quotes
<p>Here is what i am looking for:</p>

<pre><code>curl -X POST -H "Content-type: application/json" -d '{"group":"stash-adt_ooms-dev","users":['stack', 'overflow']}' "url"
</code></pre>

<p>Result:</p>

<pre><code>curl -X POST -H "Content-type: application/json" -d '{"group":"admin","users":["stack", "overflow"]}'
</code></pre>

<p>Need regex to replace words between <code>[]</code> from single quote to double quote.</p>