Bump ember-auto-import from 2.7.2 to 2.7.3 (#907)

Bumps [ember-auto-import](https://github.com/ef4/ember-auto-import/tree/HEAD/packages/ember-auto-import) from 2.7.2 to 2.7.3.
- [Release notes](https://github.com/ef4/ember-auto-import/releases)
- [Changelog](https://github.com/embroider-build/ember-auto-import/blob/main/packages/ember-auto-import/CHANGELOG.md)
- [Commits](https://github.com/ef4/ember-auto-import/commits/HEAD/packages/ember-auto-import)

---
updated-dependencies:
- dependency-name: ember-auto-import
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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