support: Update favicon

[satof3]

Task

https://redmine.weseek.co.jp/issues/149830

Summary

• favicon の更新
• SVG化
  • ダークモード切り替えに対応
• SVG化に伴い不要なサイズ別のfavicon apple-icon を削除
• ms-icon および /browserconfig.xml の削除

後続ストーリー

• Android のmaskable icon への対応
  • https://redmine.weseek.co.jp/issues/150190
  • 優先度は低い

参考

https://smarthr.design/basics/meta/favicon/

[changeset-bot]

⚠️ No Changeset found

Latest commit: 64276d5

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[reg-suit]

reg-suit detected visual differences.

Check this report, and review them.

🔴🔴🔴🔴🔴🔴🔴🔴🔴🔴🔴

🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵🔵

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The number of circles represent the number of changed images.
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