chore: fix epic issue type and label

Adding `type: epic` not only didn't work, the kind/epic label doesn't show up anymore
either. I don't have access to the org settings but the epic type appears to include
the emoji - assuming it was copied from the kind and this should fix it.

Fix for part of #2051.

Signed-off-by: Tim deBoer <[email protected]>

Author: deboer-tim

.github/ISSUE_TEMPLATE/epic.yml

@@ -1,6 +1,6 @@
 name: Epic ⚡
 description: A high-level feature
-type: epic
+type: epic ⚡
 labels: [kind/epic ⚡]
 
 body: