[GRASS-git] [OSGeo/grass] 6f68d3: CI(deps): Update actions/cache action to v4 (#3367)

[renovate[bot]]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: 6f68d3c1ca9cc893dac105129151fda024e18204
      https://github.com/OSGeo/grass/commit/6f68d3c1ca9cc893dac105129151fda024e18204
  Author: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
  Date:   2024-01-18 (Thu, 18 Jan 2024)

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

  Log Message:
  -----------
  CI(deps): Update actions/cache action to v4 (#3367)