Merge pull request #62 from joshcooper/stringify_process_output #21

Job	Run time
Released / Puppet7 gem on Ruby 2.7 on Linux	56s
Nightly / Puppet7 gem on Ruby 2.7 on Linux	1m 12s
Released / Puppet8 gem on Ruby 3.1 on Linux	29s
Nightly / Puppet8 gem on Ruby 3.1 on Linux	33s
Released / Puppet7 gem on Ruby 2.7 on macOS	2m 45s
Nightly / Puppet7 gem on Ruby 2.7 on macOS	2m 59s
Released / Puppet8 gem on Ruby 3.1 on macOS	1m 41s
Nightly / Puppet8 gem on Ruby 3.1 on macOS	1m 38s
Released / Puppet7 gem on Ruby 2.7 on Windows	4m 9s
Nightly / Puppet7 gem on Ruby 2.7 on Windows	5m 19s
Released / Puppet8 gem on Ruby 3.1 on Windows	3m 24s
Nightly / Puppet8 gem on Ruby 3.1 on Windows	3m 16s
	28m 21s

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