Upgrade github.com/hashicorp/packer-plugin-sdk to v0.5.4

[mayur7194]

Upgrading packer-plugin-sdk to the latest version. This resolves the following vulnerabilities -

• https://github.com/advisories/GHSA-2c7c-3mj9-8fqh
• https://github.com/advisories/GHSA-c5q2-7r4c-mv6g
• https://github.com/advisories/GHSA-45x7-px36-x8w8

[rgl]

thx! this was included in https://github.com/rgl/packer-plugin-windows-update/releases/tag/v0.16.0.