Fix nightly intents in nightly builds

[frenck]

Proposed change

Fixes the addition of nightly intents in our nightly builds. Originally added in #85760.

#85760 is working fine; however, I forgot actually to add the Dockerfile changes, meaning everything works right, but the nightly intents aren't installed and resulting in a failing build.

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• Dependency upgrade
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• This PR fixes or closes issue: fixes #
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[frenck]

The pytest fail because of an issue with the ubuntu apt repos @ Azure. This PR isn't changing anything that will affect or show up in Pytest. I will therefore continue the merge in order to be able to move against with shipping a nightly build.

../Frenck