Update dependency hashicorp/packer to v1.15.3

[renovate]

This PR contains the following updates:

Package	Update	Change
hashicorp/packer	patch	1.15.1 → 1.15.3

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Release Notes

hashicorp/packer (hashicorp/packer)

v1.15.3

Compare Source

BUG FIXES:

• hcp: skip bucket update requests when description and labels already match, avoiding unnecessary updates for existing buckets.
  GH-13624

v1.15.2

Compare Source

FEATURES:

• provisioner: added support for the enforced provisioner.
  GH-13591

SECURITY:

• deps: bump github.com/go-jose/go-jose/v4
  GH-13594
• deps: bump go.opentelemetry.io/otel/sdk
  GH-13606
• deps: update cloud.google.com/go and aws-sdk-go-v2 related dependencies
  GH-13610

INTERNAL:

• build: bump Go to 1.25.9 and refresh dependencies
  GH-13614
  GH-13615

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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