chore(kms): add delete-at field

[luxium30]

DISCLAIMER:

the bump for the aws-sdk-go-v2 package raised compile errors and I used Claude to fix it!

Description

go run main.go kms key show 019f40c0-1038-7622-ad4e-8da7934f037a --zone at-vie-1

┼─────────────────┼────────────────────────────────────────────────────┼
│     KMS KEY     │                                                    │
┼─────────────────┼────────────────────────────────────────────────────┼
│ ID              │ 019f40c0-1038-7622-ad4e-8da7934f037a               │
│ Name            │ my-key                                             │
│ Created At      │ 2026-07-08 08:02:36.728532898 +0000 UTC            │
│ Multizone       │ false                                              │
│ Origin Zone     │ at-vie-1                                           │
│ Status          │ pending-deletion                                   │
│ Replicas Status │ -                                                  │
│ Material        │ auto: false                                        │
│                 │ createdAt: 2026-07-08 08:02:36.728532898 +0000 UTC │
│                 │ version: 1                                         │
│ Rotation        │ auto: false                                        │
│                 │ count: 0                                           │
│                 │ nextAt: 2027-07-08 08:02:36.731744983 +0000 UTC    │
│                 │ rotationPeriod: 365                                │
│ Usage           │ encrypt-decrypt                                    │
│ Source          │ exoscale-kms                                       │
│ Description     │ abc                                                │
│ Delete At       │ 2026-07-15 08:15:14.068991162 +0000 UTC            │
┼─────────────────┼────────────────────────────────────────────────────┼

go run main.go kms key show 019f1e3b-1562-73ae-b7b2-43b2d80b362d

┼─────────────────┼────────────────────────────────────────────────────┼
│     KMS KEY     │                                                    │
┼─────────────────┼────────────────────────────────────────────────────┼
│ ID              │ 019f1e3b-1562-73ae-b7b2-43b2d80b362d               │
│ Name            │ hahahahahahhaha                                    │
│ Created At      │ 2026-07-01 15:10:16.419454182 +0000 UTC            │
│ Multizone       │ false                                              │
│ Origin Zone     │ ch-gva-2                                           │
│ Status          │ enabled                                            │
│ Replicas Status │ -                                                  │
│ Material        │ auto: false                                        │
│                 │ createdAt: 2026-07-01 15:10:16.419454182 +0000 UTC │
│                 │ version: 1                                         │
│ Rotation        │ auto: true                                         │
│                 │ count: 0                                           │
│                 │ nextAt: 2027-07-01 15:10:16.42224445 +0000 UTC     │
│                 │ rotationPeriod: 365                                │
│ Usage           │ encrypt-decrypt                                    │
│ Source          │ exoscale-kms                                       │
│ Description     │                                                    │
┼─────────────────┼────────────────────────────────────────────────────┼

Checklist

(For exoscale contributors)

• Changelog updated (under Unreleased block, and add the Pull Request #number for each bit you add to the CHANGELOG.md)
• Testing

Testing