Bump ember-test-selectors from 0.3.8 to 3.0.0

Bumps [ember-test-selectors](https://github.com/simplabs/ember-test-selectors) from 0.3.8 to 3.0.0.
- [Release notes](https://github.com/simplabs/ember-test-selectors/releases)
- [Changelog](https://github.com/simplabs/ember-test-selectors/blob/master/CHANGELOG.md)
- [Commits](mainmatter/ember-test-selectors@v0.3.8...v3.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -72,7 +72,7 @@
     "ember-template-lint": "^1.12.1",
     "ember-source": "~3.1.0",
     "ember-svg-jar": "^1.1.1",
-    "ember-test-selectors": "^0.3.7",
+    "ember-test-selectors": "^3.0.0",
     "ember-web-app": "^2.2.0",
     "emberx-select": "^3.1.1",
     "eslint": "^6.3.0",