chore: spack cherry-pick: podio: depends_on py-graphviz

This PR will install py-graphviz so as to make sure podio-vis works.

assigned to @wdconinc

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• b17d83ee - chore: podio-0.99

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• 4ebb35a8 - chore: jana2-d8fe7adb523432d9e9b7e8fd98b97f7c646053a7

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added 2 commits

• 5a6745d5 - chore: spack cherry-pick: podio: depends_on py-graphviz
• 02d7d14c - chore: podio-0.17.4

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• 70835102 - chore: jana2-d8fe7adb523432d9e9b7e8fd98b97f7c646053a7

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• c52d04d0 - chore: jana2-d8fe7adb523432d9e9b7e8fd98b97f7c646053a7

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enabled an automatic merge when the pipeline for c52d04d0 succeeds

merged