chore(ci): replace rustsec/audit-check which still runs on Node 16

The replacement is a temporary fork, which could be related later if rustsec/audit-check releases an updated version.

.github/workflows/audit-check.yml

@@ -18,7 +18,9 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
       - name: Run security audit
-        uses: rustsec/audit-check@dd51754d4e59da7395a4cd9b593f0ff2d61a9b95
+        # Note: the action below is a temporary fork of rustsec/audit-check; it could be
+        # replaced if, at some point, rustsec/audit-check is updated to use Node 20.
+        uses: clechasseur/rustsec-audit-check@b5ade62a8d38826bb50ca4b8b9bc2a8a97f0d44d
         with:
           token: ${{ secrets.GITHUB_TOKEN }}