fix(deps): update dependency @aws-lambda-powertools/metrics to ^2.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@aws-lambda-powertools/metrics (source)	^2.11.0 -> ^2.12.0

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Release Notes

aws-powertools/powertools-lambda-typescript (@​aws-lambda-powertools/metrics)

v2.12.0

Compare Source

Bug Fixes

• parser: make SNS subject field nullish (#​3415) (0da9cea)

Features

• logger: change selected method visibility to protected (#​3377) (93a19a5)
• metrics: disable metrics with POWERTOOLS_METRICS_DISABLED (#​3351) (7e8578e)
• metrics: warn when overwriting dimension (#​3352) (12f3e44)
• parser: Add appsync resolver event Zod schemas (#​3301) (318f34b)
• parser: add schema for DynamoDB - Kinesis Stream event (#​3328) (a8dfa74)

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