Bump eslint-config-prettier from 6.8.0 to 6.9.0

Bumps [eslint-config-prettier](https://github.com/prettier/eslint-config-prettier) from 6.8.0 to 6.9.0.
- [Release notes](https://github.com/prettier/eslint-config-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-config-prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/eslint-config-prettier@v6.8.0...v6.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -76,7 +76,7 @@
     "ember-source-channel-url": "^2.0.1",
     "ember-try": "^1.4.0",
     "eslint": "^6.8.0",
-    "eslint-config-prettier": "^6.8.0",
+    "eslint-config-prettier": "^6.9.0",
     "eslint-plugin-ember": "^7.7.2",
     "eslint-plugin-mocha": "^6.2.2",
     "eslint-plugin-node": "^10.0.0",

yarn.lock

@@ -4184,10 +4184,10 @@ escape-string-regexp@1.0.5, escape-string-regexp@^1.0.2, escape-string-regexp@^1
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
   integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
 
-eslint-config-prettier@^6.8.0:
-  version "6.8.0"
-  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-6.8.0.tgz#36bd7559dcef9f97d7596779b38e6a879abb89d3"
-  integrity sha512-aq4M7mjjVregZ2l45O9qz6Mv6f5zVMl/IqfmUL8hNOoDAzVKYMhYPJytbqE/lPIVO1iMDXIFqjiEE59BfJZpZw==
+eslint-config-prettier@^6.9.0:
+  version "6.9.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-6.9.0.tgz#430d24822e82f7deb1e22a435bfa3999fae4ad64"
+  integrity sha512-k4E14HBtcLv0uqThaI6I/n1LEqROp8XaPu6SO9Z32u5NlGRC07Enu1Bh2KEFw4FNHbekH8yzbIU9kUGxbiGmCA==
   dependencies:
     get-stdin "^6.0.0"