fix: allow non root to write in reports dir

    BATS_REPORT_FILENAME: bash-bats.xunit.xml

  script:

    - install_bats_libs

    - mkdir reports

    - mkdir -p -m 777 reports

    - run_bats --report-formatter junit --output reports $BASH_BATS_OPTS $BASH_BATS_TESTS

  # the coverage regex captures 2 possible output logs (depending on the formatter)

  # 1: ... LOC (27.27%) covered