chore: bump `tflint` AWS ruleset to `v0.31.0` #470

Job	Run time
Orchestrator	6s
Security Terraform / Terraform Scan	35s
Terraform Account	0s
Documentation	0s
Get latest app versions	0s
Lint Terraform	0s
Security App / Selfserve	0s
Security App / API	0s
Security App / Internal	0s
App	0s
CDN	0s
Terraform Environment	0s
Docker	0s
	41s

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