refactor: make issue templates required (#2226)

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -11,6 +11,8 @@ body:
     attributes:
       label: Describe the bug
       description: A clear and concise description of what the bug is.
+    validations:
+      required: true
   - type: textarea
     attributes:
       label: Expected behaviour

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -9,6 +9,8 @@ body:
       description:
         A clear and concise description of what the problem is. Ex. I'm always
         frustrated when [...]
+    validations:
+      required: true
   - type: textarea
     attributes:
       label: Describe the solution you'd like