Auto merge of #2718 - rust-lang:renovate/ember-optional-features-2.x, r=Turbo87

Update dependency @ember/optional-features to v2

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@ember/optional-features](https://togithub.com/emberjs/ember-optional-features) | devDependencies | major | [`1.3.0` -> `2.0.0`](https://renovatebot.com/diffs/npm/@ember%2foptional-features/1.3.0/2.0.0) |

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### Release Notes

<details>
<summary>emberjs/ember-optional-features</summary>

### [`v2.0.0`](https://togithub.com/emberjs/ember-optional-features/blob/master/CHANGELOG.md#v200-2020-08-27)

[Compare Source](https://togithub.com/emberjs/ember-optional-features/compare/v1.3.0...v2.0.0)

##### 💥 Breaking Change

-   [#&#8203;238](https://togithub.com/emberjs/ember-optional-features/pull/238) Drop Node 8 support. ([@&#8203;rwjblue](https://togithub.com/rwjblue))

##### 🚀 Enhancement

-   [#&#8203;242](https://togithub.com/emberjs/ember-optional-features/pull/242) Update dependencies to latest versions. ([@&#8203;rwjblue](https://togithub.com/rwjblue))

##### 🏠 Internal

-   [#&#8203;249](https://togithub.com/emberjs/ember-optional-features/pull/249) Drop util.promisify usage. ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [#&#8203;248](https://togithub.com/emberjs/ember-optional-features/pull/248) Re-roll yarn.lock. ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [#&#8203;247](https://togithub.com/emberjs/ember-optional-features/pull/247) Add prettier setup to eslint config. ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [#&#8203;245](https://togithub.com/emberjs/ember-optional-features/pull/245) Update linting package versions. ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [#&#8203;243](https://togithub.com/emberjs/ember-optional-features/pull/243) Update automated release setup. ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [#&#8203;240](https://togithub.com/emberjs/ember-optional-features/pull/240) Drop TravisCI (in favor of GitHub Actions) ([@&#8203;rwjblue](https://togithub.com/rwjblue))

##### Committers: 2

-   Robert Jackson ([@&#8203;rwjblue](https://togithub.com/rwjblue))
-   [@&#8203;dependabot-preview\[bot\]](https://togithub.com/apps/dependabot-preview)

</details>

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:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

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 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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Author: bors

package-lock.json

@@ -43,7 +43,7 @@
     "pretty-bytes": "5.3.0"
   },
   "devDependencies": {
-    "@ember/optional-features": "1.3.0",
+    "@ember/optional-features": "2.0.0",
     "@ember/render-modifiers": "1.0.2",
     "@glimmer/component": "1.0.1",
     "@glimmer/tracking": "1.0.1",