new slack channel

Author: adumesny

ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 ## Subject of the issue
 Describe your issue here.
-If unsure if lib bug, use slack channel instead: https://join.slack.com/t/gridstackjs/shared_invite/zt-27q0rwf80-5vCt81Z_hfVgpRW7L17MnQ
+If unsure if lib bug, use slack channel instead: https://join.slack.com/t/gridstackjs/shared_invite/zt-2qa21lnxz-vw29RdTFet3N6~ABqT9kwA
 
 ## Your environment
 * version of gridstack.js - DON'T SAY LATEST as that doesn't mean anything a month/year from now.

README.md

@@ -15,7 +15,7 @@ If you find this lib useful, please donate [PayPal](https://www.paypal.me/alaind
 [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.me/alaind831)
 [![Donate](https://img.shields.io/badge/Donate-Venmo-g.svg)](https://www.venmo.com/adumesny)
 
-Join us on Slack: [https://gridstackjs.slack.com](https://join.slack.com/t/gridstackjs/shared_invite/zt-27q0rwf80-5vCt81Z_hfVgpRW7L17MnQ)
+Join us on Slack: [https://gridstackjs.slack.com](https://join.slack.com/t/gridstackjs/shared_invite/zt-2qa21lnxz-vw29RdTFet3N6~ABqT9kwA)
 
 <!-- [![Slack Status](https://gridstackjs.com/badge.svg)](https://gridstackjs.slack.com) -->
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