Backport of #26404 to release/v7.6

Triggered by @TravisEz13 on behalf of @adityapatwardhan

Original CL Label: CL-BuildPackaging

/cc @PowerShell/powershell-maintainers

Impact

Tooling Impact

• Required tooling change

Updates PSResourceGet package to version 1.2.0-preview4 for release/v7.6 to ensure compatibility with the release branch.

Regression

• No

This is a package version update to align with the release requirements.

Testing

Verified by:

1. Cherry-pick applied cleanly with auto-merge
2. Only affects PSGalleryModules.csproj package reference
3. Change is a single-line version update
4. Original PR validated in main branch

Risk

• High
• Medium
• Low

Medium risk: Package version updates can affect module loading and functionality. However, this is a required update for v7.6 and has been validated in the main branch. The change is minimal (single package version reference).