[FLINK-37968][Connectors/Kinesis] Update netty version to v4.1.127.Final

[Neo2308]

Purpose of the change

Update netty version to v4.1.127.Final to resolve vulnerabilities

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

Significant changes

(Please check any boxes [x] if the answer is "yes". You can first publish the PR and check them afterwards, for convenience.)

• Dependencies have been added or upgraded
• Public API has been changed (Public API is any class annotated with @Public(Evolving))
• Serializers have been changed
• New feature has been introduced
  • If yes, how is this documented? (not applicable / docs / JavaDocs / not documented)

[boring-cyborg]

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[Neo2308]

@hlteoh37 @darenwkt can you review this PR?