Rolled back unneeded dev dependency updates

package.json

@@ -41,12 +41,12 @@
 		"require": "./papaparse.js"
 	},
 	"devDependencies": {
-		"chai": "^4.3.4",
+		"chai": "^4.2.0",
 		"connect": "^3.7.0",
 		"eslint": "^7.28.0",
 		"mocha": "^9.0.0",
 		"mocha-headless-chrome": "^3.1.0",
-		"open": "8.2.0",
+		"open": "7.0.0",
 		"rollup": "^2.51.1",
 		"rollup-plugin-terser": "^7.0.2",
 		"serve-static": "^1.14.1"