Fix dependencies

Author: danielbayley

package.json

@@ -32,9 +32,8 @@
     "babel-preset-jest": "^26.5.0"
   },
   "peerDependencies": {
-    "@babel/core": "^7.12.0",
-    "coffeescript": "^2.5.1",
-    "jest": "^26.5.3"
+    "coffeescript": "2.x",
+    "jest": ">= 17.0.0 < 26"
   },
   "publishConfig": {
     "registry": "https://npm.pkg.github.com"