AWS::EC2::TransitGatewayAttachment - Tags should not require replacement

### Name of the resource

AWS::EC2::TransitGatewayAttachment

### Resource name

_No response_

### Description

Currently updating the `Tags` property of a transit gateway VPC attachment requires replacement, however there is an underlying API (CreateTags & DeleteTags) which would allow for making such an update without replacement.

Expected behavior:
In Update, changing the `Tags` property should not require replacement.

### Other Details

_No response_

Start by locating the CloudFormation implementation or coverage entry for AWS::EC2::TransitGatewayAttachment and its Update handling for the Tags property. Check how the underlying CreateTags and DeleteTags APIs are represented; done means changing Tags no longer requires replacement during Update.

Written by the indexing model from the issue text.