chore(deps-dev): bump ember-data from 5.3.9 to 5.6.0

Bumps [ember-data](https://github.com/emberjs/data/tree/HEAD/packages/-ember-data) from 5.3.9 to 5.6.0.
- [Release notes](https://github.com/emberjs/data/releases)
- [Changelog](https://github.com/emberjs/data/blob/v5.6.0/CHANGELOG.md)
- [Commits](https://github.com/emberjs/data/commits/v5.6.0/packages/-ember-data)

---
updated-dependencies:
- dependency-name: ember-data
  dependency-version: 5.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -64,7 +64,7 @@
     "ember-cli-mirage": "3.0.4",
     "ember-cli-sri": "2.1.1",
     "ember-cli-terser": "4.0.2",
-    "ember-data": "~5.3.9",
+    "ember-data": "~5.6.0",
     "ember-fetch": "^8.1.2",
     "ember-load-initializers": "3.0.1",
     "ember-qunit": "8.1.1",