zh, en: update some instance type for AWS Graviton (#2546)

[ti-chi-bot]

This is an automated cherry-pick of #2546

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What is changed, added, or deleted? (Required)

We can use Graviton instances in AWS

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• master (the latest development version)
• v1.6 (TiDB Operator 1.6 versions)
• v1.5 (TiDB Operator 1.5 versions)
• v1.4 (TiDB Operator 1.4 versions)
• v1.3 (TiDB Operator 1.3 versions)
• v1.2 (TiDB Operator 1.2 versions)

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[lilin90]

/approve

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