Fix the build via new version of @babel/preset-env

Bump to current `ember-cli-babel`, which transitively requires a version
of `@babel/preset-env` which [fixes the build issue][1]. Then use
`yarn-deduplicate` to resolve all transitive dependencies to the minimum
number of (maximum) versions of those shared dependencies, which results
in *all* 7.x versions of `@babel/preset-env` resolving to a version with
the fix.

[1]: nodejs/node#32852

package.json

@@ -34,7 +34,7 @@
   },
   "dependencies": {
     "@glimmer/tracking": "^1.0.0",
-    "ember-cli-babel": "^7.17.2"
+    "ember-cli-babel": "^7.26.5"
   },
   "devDependencies": {
     "@ember/optional-features": "^1.3.0",