chore: update openpgp key documentation #698

Job	Run time
Python (macos-latest, 3.9) / macos-latest, python 3.9	1m 28s
Python (ubuntu-latest, 3.10) / ubuntu-latest, python 3.10	1m 17s
Python (ubuntu-latest, 3.12) / ubuntu-latest, python 3.12	1m 15s
Python (windows-latest, 3.10) / windows-latest, python 3.10	2m 13s
Python (macos-latest, 3.11) / macos-latest, python 3.11	58s
Python (ubuntu-latest, 3.9) / ubuntu-latest, python 3.9	1m 12s
Python (windows-latest, 3.9) / windows-latest, python 3.9	2m 5s
Python (windows-latest, 3.11) / windows-latest, python 3.11	2m 12s
Python (windows-latest, 3.12) / windows-latest, python 3.12	2m 40s
Python (ubuntu-latest, 3.11) / ubuntu-latest, python 3.11	1m 13s
Python (macos-latest, 3.10) / macos-latest, python 3.10	1m 23s
Python (macos-latest, 3.12) / macos-latest, python 3.12	1m 0s
	18m 56s

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