PR / feat: migrate to dedicated AWS account and update CI #1

Job	Run time
Paths Filter	3s
Check PR	25s
CI / Check App / Formatting	26s
CI / Check App / Unit Tests	1m 5s
CI / Check App / Clippy	1m 9s
CI / Check App / Licenses	41s
CI / Check App / Tests Suite "${{ matrix.element }}"	0s
CI / Check App / Unused Dependencies	1m 40s
CI / Check Infra / Formatting	7s
CI / Check Infra / TFLint	34s
CI / Check Infra / TFSec	35s
CI / Check Infra / Validate	30s
CI / Plan Infra ❱❱ prod / Plan `prod`	1m 33s
CI / Plan Infra ❱❱ staging / Plan `staging`	1m 19s
Merge Check	0s
	10m 7s

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