fix: Change security group tags merge precedence in vpc-endpoints module

[chris3ware]

Description

The security group tags merge function precedence has been changed in the vpc-endpoints module.

Motivation and Context

This ensures that a Name tag passed to the security_group_tags variable is preferred over var.tags, var.security_group_name or var.security_group_name_prefix

Currently, if var.security_group_name_prefix is used the Name tag has a trailing hyphen. e.g. ex-app-vpce-sg-euw1-

The hyphen can be dropped, but then the actual name does not have a hyphen between the prefix and the random suffix.

Breaking Changes

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[bryantbiggs]

it is correct as its currently written

[github-actions]

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