Cross Platform Action 1.3.0

Added

• Add support for FreeBSD 15.1 (#153)

• Add a --environment-variables post-flag to the cpa.sh custom shell for
  forwarding additional environment variables to the VM on a per-step basis,
  without having to declare them on the Start VM step via the
  environment_variables input
  (#145):

  - name: Run a command with extra environment variables
    shell: cpa.sh {0} --environment-variables MY_ENV1 MY_ENV2
    env:
      MY_ENV1: value1
      MY_ENV2: value2
    run: echo "$MY_ENV1 $MY_ENV2"