Build(deps-dev): Bump ember-template-lint from 6.1.0 to 7.9.0 (#2295)

Bumps [ember-template-lint](https://github.com/ember-template-lint/ember-template-lint) from 6.1.0 to 7.9.0.
- [Release notes](https://github.com/ember-template-lint/ember-template-lint/releases)
- [Changelog](https://github.com/ember-template-lint/ember-template-lint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ember-template-lint/ember-template-lint/commits)

---
updated-dependencies:
- dependency-name: ember-template-lint
  dependency-version: 7.9.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -124,7 +124,7 @@
     "ember-source": "^5.12.0",
     "ember-svg-jar": "^2.6.0",
     "ember-template-imports": "^4.3.0",
-    "ember-template-lint": "^6.1.0",
+    "ember-template-lint": "^7.9.0",
     "ember-test-selectors": "^6.0.0",
     "ember-tooltips": "^3.6.0",
     "ember-truth-helpers": "^4.0.3",