FIX: Update mocha and chai to the latest version, remove nock module from the dependency.
FIX: Update mocha and chai to the latest version, remove nock module from the dependency.

godong9/solr-node-client,lbdremy/solr-node-client,luketaverne/solr-node-client,Bangsheng/solr-node-client,kfitzgerald/solr-node-client,yanxi-com/solr-node-client,CondeNast/solr-node-client,lbdremy/solr-node-client,nicolasembleton/solr-node-client