[GRASS-git] [OSGeo/grass] 76b096: CI(deps): Update docker/dockerfile Docker tag to v1.6

[renovate[bot]]

  Branch: refs/heads/renovate/docker-dockerfile-1.x
  Home:   https://github.com/OSGeo/grass
  Commit: 76b096614582805feb7d9aa50ffc88eb63d9942f
      https://github.com/OSGeo/grass/commit/76b096614582805feb7d9aa50ffc88eb63d9942f
  Author: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
  Date:   2023-11-16 (Thu, 16 Nov 2023)

  Changed paths:
    M Dockerfile
    M docker/ubuntu/Dockerfile

  Log Message:
  -----------
  CI(deps): Update docker/dockerfile Docker tag to v1.6