fix: update helm chart unifi to 5.1.2

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
unifi	patch	5.1.0 -> 5.1.2

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Release Notes

k8s-at-home/charts

v5.1.2

Compare Source

Ubiquiti Network's Unifi Controller

v5.1.1

Compare Source

Ubiquiti Network's Unifi Controller

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Configuration

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