chore: Bug template ask for previous versions (#3456)

Ask if it worked on previous version in the bug template, as we ask
that question frequently.

Author: philipphofmann

.github/ISSUE_TEMPLATE/bug.yml

@@ -50,10 +50,18 @@ body:
     attributes:
       label: Version
       description: Which version of sentry-cocoa do you use?
-      placeholder: 7.7.0 ← should look like this
+      placeholder: 8.15.0 ← should look like this
     validations:
       required: true
 
+  - type: input
+    id: previous-versions
+    attributes:
+      label: Did it work on previous versions?
+      description: If yes, which ones?
+    validations:
+      required: false
+
   - type: textarea
     id: repro
     attributes: