[GRASS-git] [OSGeo/grass] e62f68: CI(deps): Update alpine Docker tag to v3.18

[renovate[bot]]

  Branch: refs/heads/renovate/alpine-3.x
  Home:   https://github.com/OSGeo/grass
  Commit: e62f68bc3f32bce33675fd2f62078cda0283bb95
      https://github.com/OSGeo/grass/commit/e62f68bc3f32bce33675fd2f62078cda0283bb95
  Author: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
  Date:   2023-05-10 (Wed, 10 May 2023)

  Changed paths:
    M docker/alpine/Dockerfile

  Log Message:
  -----------
  CI(deps): Update alpine Docker tag to v3.18