ci: Run vulnerability scan in merge queues (#3332)

Signed-off-by: sneax <paladesh600@gmail.com>
Signed-off-by: segfault_bits <149077711+sneaxhuh@users.noreply.github.com>

.github/workflows/vulnerability-scan.yaml

@@ -12,6 +12,8 @@ on:
   push:
     branches:
       - develop
+  merge_group:
+    types: [checks_requested]
 
 jobs:
   scan: