Update dependency ember-cli-addon-docs to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-cli-addon-docs	5.2.0 -> 6.0.2

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Release Notes

ember-learn/ember-cli-addon-docs (ember-cli-addon-docs)

v6.0.2

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🐛 Bug Fix

• #​1485 Add ember-tether to dependencies (@​barryofguilder)
• #​1488 Forward @​class argument in docs-viewer/x-nav-list component (@​SergeAstapov)

Committers: 2

• Jason Barry (@​barryofguilder)
• Sergey Astapov (@​SergeAstapov)

v6.0.1

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💥 Breaking Change

• #​1478 Require ember >= 4.4, node >= 16 (@​RobbieTheWagner)

🚀 Enhancement

• #​1454 embroider ready (@​patricklx)

🐛 Bug Fix

• #​1477 Add inverse: null to hasMany relationships (@​Shishouille)
• #​1460 pin ember-svg-jar to fix Embroider build (@​patricklx)

Committers: 4

• Jordan Hawker (@​elwayman02)
• Patrick Pircher (@​patricklx)
• Robbie Wagner (@​RobbieTheWagner)
• Shirin (@​Shishouille)

v6.0.0

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