Bump ember-template-lint from 4.10.1 to 4.12.0 (#836)
Bump ember-template-lint from 4.10.1 to 4.12.0 (#836)

Bumps [ember-template-lint](https://github.com/ember-template-lint/ember-template-lint) from 4.10.1 to 4.12.0.
- [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/compare/v4.10.1...v4.12.0)

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

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
shipshapecode/ember-math-helpers,shipshapecode/ember-math-helpers