feat: update to puppetdb 8.8.1

[mababio]

New Puppetdb version is available. Interested in it being used in container-puppetdb

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[rwaffen]

If it is not to much of a hassle may you please sign your commit? https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits

[mababio]

Thanks @rwaffen for your kindness and patience! I've gone ahead and signed my commit