chore(issue templates): discouraging Issues for feature requests (#22617)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: Create a report to help us improve
+about: Create a report to help us improve Superset's stability! For feature requests please open a discussion at https://github.com/apache/superset/discussions/categories/ideas
 labels: "#bug"
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,14 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-labels: "#enhancement"
-
----
-
-Github Discussions is our new home for discussing features and improvements!
-
-https://github.com/apache/superset/discussions/categories/ideas
-
-We'd like to keep Github Issues focuses on bugs and SIP's (Superset Improvement Proposals)!
-
-Please note that feature requests opened as Github Issues will be moved to Discussions.

.github/ISSUE_TEMPLATE/sip.md

@@ -1,7 +1,9 @@
 ---
 name: SIP
-about: Superset Improvement Proposal [See SIP-0](https://github.com/apache/superset/issues/5602)
+about: Superset Improvement Proposal (See SIP-0: https://github.com/apache/superset/issues/5602)
 labels: "#SIP"
+title: "[SIP] Your Title Here (do not add SIP number)"
+asignees: "apache/superset-committers"
 
 ---