[macOS, CI] reenable packaging to make nightlies work

.travis.yml

@@ -63,7 +63,7 @@ before_script: ./CI/before_script.${TRAVIS_OS_NAME}.sh
 script:
  - cd ./build
  - if [ "$COVERITY_SCAN_BRANCH" != 1 ]; then ${ANALYZE}make -j3; fi
- - if [ "$COVERITY_SCAN_BRANCH" != 1 ] && [ "${TRAVIS_OS_NAME}" = "osx" ]; then make; fi
+ - if [ "$COVERITY_SCAN_BRANCH" != 1 ] && [ "${TRAVIS_OS_NAME}" = "osx" ]; then make package; fi
  - if [ "$COVERITY_SCAN_BRANCH" != 1 ] && [ "${TRAVIS_OS_NAME}" = "linux" ]; then ./openmw_test_suite; fi
  - if [ "$COVERITY_SCAN_BRANCH" != 1 ] && [ "${TRAVIS_OS_NAME}" = "linux" ]; then cd .. && ./CI/check_tabs.sh; fi
  - cd "${TRAVIS_BUILD_DIR}"