Ask for Nextcloud version on issue reporting

Signed-off-by: Git'Fellow <12234510+solracsf@users.noreply.github.com>

.github/ISSUE_TEMPLATE/BUG_REPORT.yml

@@ -70,6 +70,20 @@ body:
         - "Community SNAP package"
         - "Community VM appliance"
         - "Other Community project"
+  - type: dropdown
+    id: nextcloud-version
+    attributes:
+      label: Nextcloud Server version
+      description: |
+        Select Nextcloud Server version.
+        _Versions not listed here are not maintained and not supported anymore_
+      options:
+        - "24"
+        - "25"
+        - "26"
+        - "master"
+    validations:
+      required: true
   - type: dropdown
     id: system
     attributes: