dependencySatisfies only reliable with a peerDep

This addon uses `dependencySatisfies` to check the ember-source version. But unless you have a peerDep on ember-source, that was unreliable depending on Yarn/NPM optimization behaviors. And now as of embroider-build/embroider#1070 we're making `dependencySatisfies` strict so that it won't accidentally work sometimes when you don't actually declare a dependency or peerDependency.

package.json

@@ -69,6 +69,9 @@
     "release-it-lerna-changelog": "^3.1.0",
     "webpack": "^5.55.1"
   },
+  "peerDependencies": {
+    "ember-source": "^3.8 || 4"
+  },
   "engines": {
     "node": "12.* || 14.* || >= 16"
   },