[terraform] Bump prod Identity to 0.47

Summary:
Git log for changes 0.45 - 0.47:

• 57275f883c [identity] fix lastPrimarySignature attribute
• 3438b0648a [identity] Introduce the use_new_flow response code
• 6e248249ec Upgrade to Rust 1.81
• 0350430166 [shared] bump opaque-ke to 2.1.0-pre.1
• 8f72e02e2b [backup-service][backup-client] update /latest endpoint to return both backupID and userID
• aa69c9069f [identity][comm-lib] move is_valid_ethereum_address to comm-lib

Test Plan: terraform plan

Reviewers: kamil, ashoat

Reviewed By: ashoat

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D14177