Bump ember-template-lint from 3.3.1 to 3.4.2 (#772)
Bump ember-template-lint from 3.3.1 to 3.4.2 (#772)

Bumps [ember-template-lint](https://github.com/ember-template-lint/ember-template-lint) from 3.3.1 to 3.4.2.
- [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/v3.3.1...v3.4.2)

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

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
shipshapecode/ember-shepherd,shipshapecode/ember-shepherd,rwwagner90/ember-shepherd,rwwagner90/ember-shepherd