chore(deps): update dependency ember-cli to v6 #1385

Job	Run time
Install	35s
Build Tests	1m 0s
Lint	40s
[email protected]	1m 3s
Floating Deps Test	58s
Publish Docs to Cloudflare Pages	1m 51s
[email protected]	1m 20s
Default Tests	45s
[email protected]	1m 11s
Typecheck Docs	1m 7s
${{ matrix.try-scenario }}	0s
Release	0s
Post Preview URL as comment to PR	55s
	11m 25s

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