Revert "Revert "zodbpickle: v↑ (1.0.4 -> 2.0.0)""

This reverts commit 27f574bc.

NEO now should support zodbpickle >= 2 with neoppod!19.

/cc @jerome
/merge-request-on !1125
17 jobs for arnau-aurel-zope4
Status Job ID Name Coverage
  External
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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed SlapOS.Eggs.UnitTest-Master.Python2

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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