fix: handle dotnet-outdated exit code 3 and unsafe heredoc delimiter in update-dependencies workflow

[Copilot]

The update-dependencies workflow was failing because dotnet outdated --upgrade exits with code 3 when it successfully updates packages. With bash's -e flag active, this aborted the script before writing the closing heredoc delimiter, causing GitHub Actions to error with Invalid value. Matching delimiter not found 'EOF'.

Changes

• .github/workflows/update-dependencies.yml
  • Append || true to the dotnet outdated invocation to treat exit code 3 as success
  • Replace hardcoded EOF heredoc delimiter with $(openssl rand -hex 16) to prevent future collision if the command output ever contains EOF on a line by itself

- name: Update dependencies
  id: update_deps
  run: |
    DELIMITER=$(openssl rand -hex 16)
    {
      echo "report<<${DELIMITER}"
      dotnet outdated --upgrade --version-lock Major Finbuckle.MultiTenant.slnx || true
      echo "${DELIMITER}"
    } >> "$GITHUB_OUTPUT"

[AndrewTriesToCode]

ok