Use env reference in action

[ahatzz11]

• Install gpg key for usage in actions
• Remove quotes from publish, fix env reference to file
• Use env reference

[github-actions[bot]]

Unit Test Results

5 files  5 suites   2s :stopwatch: 7 tests 7 :heavy_check_mark: 0 :zzz: 0 :x: 8 runs  8 :heavy_check_mark: 0 :zzz: 0 :x:

Results for commit 2139faa3.