bump dependencies

plus besoin plugin-proposal-class-properties (inclus dans preset-env puisque stage 4)

.babelrc

 {
 	"presets": [
 		["@babel/env", {"modules": false}]
-	],
-	"plugins": ["@babel/plugin-proposal-class-properties"]
+	]
 }
\ No newline at end of file

package.json

@@ -12,13 +12,12 @@
   "homepage": "https://gitlab.univ-lille.fr/js",
   "license": "ISC",
   "devDependencies": {
-    "@babel/cli": "^7.12.10",
-    "@babel/core": "^7.12.10",
-    "@babel/plugin-proposal-class-properties": "^7.12.1",
-    "@babel/preset-env": "^7.12.11",
-    "babel-loader": "^8.2.2",
-    "prettier": "^2.2.1",
-    "webpack": "^5.18.0",
-    "webpack-cli": "^4.4.0"
+    "@babel/cli": "^7.16.8",
+    "@babel/core": "^7.16.12",
+    "@babel/preset-env": "^7.16.11",
+    "babel-loader": "^8.2.3",
+    "prettier": "^2.5.1",
+    "webpack": "^5.68.0",
+    "webpack-cli": "^4.9.2"
   }
 }