Limite explicitement à node >=12 <14.

package.json

@@ -13,6 +13,10 @@
   ],
   "author": "Guillaume Perréal <guillaume.perreal@inrae.fr>",
   "license": "MIT",
+  "engineStrict": true,
+  "engines": {
+    "node": ">=12 <14"
+  },
   "dependencies": {
     "del": "^5.1.0",
     "esm": "^3.2.25",