Add claude-sonnet-4-6 pricing to Bedrock

[Argonaut6]

[Bedrock] Add claude-sonnet-4-6 pricing to Bedrock

This Model ID is required for Portkey to recognize respoonses from Bedrock's API when integrating with Sonnet 4.6 through Claude code. See the similar model ID naming convention for claude-opus-4-6.

• New model pricing
• Update existing pricing
• New model configuration
• Bug fix

Source Verification

Source Link: (see existing Claude Sonnet 4.6 pricing models)

Important

Please include a link to the official pricing page from the provider. Simple "I heard it from somewhere" or screenshot sources are not accepted.

Checklist

• I have validated the JSON using jq or an online validator
• I have verified that prices are in cents per token (not dollars)
• I have included the source link above
• I have signed the CLA (if first-time contributor)