Promtail: increase resource requests/limits

[giorio94]

Description

This PR increases the resource limits of promtail.

[kingmakerbot]

Hi @giorio94. Thanks for your PR.

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Make sure this PR appears in the CrownLabs changelog, adding one of the following labels:

• kind/breaking: 💥 Breaking Change
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• kind/bug: 🐛 Bug Fix
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[giorio94]

/merge