[GRASS-git] [OSGeo/grass-addons] baa796: CI: fix link creation for GRASS GIS 8 (#538)

[Markus Neteler]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: baa7964c4c9a223fee5445e8e4e0f998c1c0c34a
      https://github.com/OSGeo/grass-addons/commit/baa7964c4c9a223fee5445e8e4e0f998c1c0c34a
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2021-06-05 (Sat, 05 Jun 2021)

  Changed paths:
    M .github/workflows/ci.yml

  Log Message:
  -----------
  CI: fix link creation for GRASS GIS 8 (#538)

Only create link if versionless startup script `grass` not yet present (GRASS GIS < 8)