[FEATURE] Update SRA Solutions

[sbrown-tecracer]

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Is your feature request related to a problem? Please describe

No

Describe the solution you'd like

An option to Update the Solutions based on the orginal Install : https://github.com/aws-samples/aws-security-reference-architecture-examples/blob/main/aws_sra_examples/docs/DOWNLOAD-AND-STAGE-SOLUTIONS.md#download-and-stage-the-aws-sra-solutions so that releases can be "updated" in a working environment

Describe alternatives you've considered

Manual copy / paste / update of released code when commited to "main" code branch

Additional context

From what I can tell, the "stage_solution.sh" is deigned only for when the buckets / lambda's do not exist and will fail when an update is made, hence the feature request