Bump version

packages/lib/package.json

 {
   "name": "@openfisca/json-model",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Library to handle informations extracted in JSON or YAML format from OpenFisca parameters, variables, etc",
   "keywords": [
     "AST",

packages/tools/package.json

 {
   "name": "@openfisca/json-model-tools",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Tools to handle informations extracted in JSON or YAML format from OpenFisca parameters, variables, etc",
   "keywords": [
     "AST",
@@ -48,7 +48,7 @@
   "dependencies": {
     "@auditors/core": "^0.7.0",
     "@ltd/j-toml": "^1.20.0",
-    "@openfisca/json-model": "^3.1.0",
+    "@openfisca/json-model": "^3.1.1",
     "@tricoteuses/legal-explorer": "^0.4.0",
     "command-line-args": "^5.1.1",
     "fast-deep-equal": "^3.1.3",