ci: pin latest libvmi master

Author: Wenzel

.github/actions/libvmi-setup/action.yml

@@ -48,7 +48,7 @@ runs:
         repository: libvmi/libvmi
         path: libvmi
         # pinned to a specific commit to avoid breakage
-        ref: "45b32c0f0003b4037700a1b534879b7d8bee5de0"
+        ref: "e7074407fc3b98db1aa73f918b3720bd4438734b"
 
     - name: install libvmi
       shell: bash