Update dependency ember-cli to v6.8.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ember-cli (source)	6.7.2 -> 6.8.0

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Release Notes

ember-cli/ember-cli (ember-cli)

v6.8.0

• @​ember-tooling/classic-build-addon-blueprint 6.8.0-alpha.5 (patch)
• @​ember-tooling/classic-build-app-blueprint 6.8.0-alpha.5 (patch)
• @​ember-tooling/blueprint-model 0.2.0 (minor)
• ember-cli 6.8.0-alpha.5 (patch)

🚀 Enhancement

• @ember-tooling/blueprint-model
  • #​10802 enable Vite by default (@​mansona)
• Other
  • #​10804 Support a --ts alias for the addon, init and new commands (@​bertdeblock)

🏠 Internal

• #​10806 skip build watch tests when vite is enabled (@​mansona)

Committers: 2

• Bert De Block (@​bertdeblock)
• Chris Manson (@​mansona)

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