IT-1 refactor: change volume types to GP3

[hugorut]

Update root block and ebs volume types to GP3 for the web instances.

[github-actions]

💰 Infracost estimate: monthly cost will decrease by $489 (-20%) 📉

Project	Previous	New	Diff
infra_aws	$1,117	$628	-$488.65 (-44%)
All projects	$2,446	$1,958	-$488.65 (-20%)

2 projects have no cost estimate changes.

Infracost output

Project: infra_aws

~ aws_instance.web_app
  -$280 ($680 → $400)

    ~ Instance usage (Linux/UNIX, on-demand, m5.4xlarge → m5.2xlarge)
      -$280 ($561 → $280)

~ aws_lambda_function.hello_world
  -$208 ($437 → $228)

    ~ Duration
      -$208 ($417 → $208)

Monthly cost change for infra_aws
Amount:  -$489 ($1,117 → $628)
Percent: -44%

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The following projects have no cost estimate changes: infra_azure (Module path: azure), infra_google (Module path: google)
Run the following command to see their breakdown: infracost breakdown --path=/path/to/code

──────────────────────────────────
Key: ~ changed, + added, - removed

6 cloud resources were detected:
∙ 6 were estimated, all of which include usage-based costs, see https://infracost.io/usage-file

This comment will be updated when the cost estimate changes.

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