chore(deps-dev): bump ember-flatpickr from 4.0.0 to 7.1.0

Bumps [ember-flatpickr](https://github.com/RobbieTheWagner/ember-flatpickr) from 4.0.0 to 7.1.0.
- [Release notes](https://github.com/RobbieTheWagner/ember-flatpickr/releases)
- [Changelog](https://github.com/RobbieTheWagner/ember-flatpickr/blob/main/CHANGELOG.md)
- [Commits](RobbieTheWagner/ember-flatpickr@v4.0.0...v7.1.0)

---
updated-dependencies:
- dependency-name: ember-flatpickr
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -75,7 +75,7 @@
     "ember-cli-test-loader": "3.1.0",
     "ember-concurrency": "3.1.1",
     "ember-data": "5.3.0",
-    "ember-flatpickr": "4.0.0",
+    "ember-flatpickr": "7.1.0",
     "ember-load-initializers": "2.1.2",
     "ember-qunit": "8.0.2",
     "ember-resolver": "11.0.1",