CI: Update dune to support trunk

Unfortunately, this is not part of a released version yet

Author: shym

.github/workflows/common.yml

@@ -128,7 +128,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: ocaml/dune
-          ref: 3.16.0
+          ref: 2de53980efa731eacf5475139d9a5a218f9752a0
           path: dune
         if: steps.cache.outputs.cache-hit != 'true'