Show per-architecture ROCm versions on release notes

[danielholanda]

Description

When rocm_version: latest is used, each architecture independently resolves and downloads the latest ROCm version. Previously, release notes only showed a single ROCm version (from whichever build completed first), which was inaccurate when different architectures resolved to different versions.

Solution

• Each build matrix job now saves its resolved ROCm version to a file and uploads it as an artifact
• The release job reads all per-architecture version files and displays them accurately in the release notes

Example Release Notes

Before:

• ROCm Version: 7.10.0a20251120
  After:
• ROCm Version(s):
  • gfx1151 (windows): 7.10.0a20251120
  • gfx1151 (ubuntu): 7.10.0a20251120
  • gfx1150 (windows): 7.10.0a20251121
  • gfx110X (ubuntu): 7.10.0a20251119