Update the link

Co-authored-by: Madelyn Olson <madelyneolson@gmail.com>
Signed-off-by: Yury-Fridlyand <yury.fridlyand@improving.com>

.github/ISSUE_TEMPLATE/config.yml

@@ -10,7 +10,7 @@ contact_links:
     url: https://matrix.to/#/#valkey:matrix.org
     about: We are on Matrix too!
   - name: Chat with us on Slack?
-    url: https://valkey-oss-developer.slack.com/archives/C071Q2B3RNC
+    url: https://join.slack.com/t/valkey-oss-developer/shared_invite/zt-2nxs51chx-EB9hu9Qdch3GMfRcztTSkQ
     about: We are on Slack too!
   - name: Documentation issue?
     url: https://github.com/valkey-io/valkey-doc/issues