chore(deps): update linuxserver/unifi-controller docker tag to v7.5.187

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
linuxserver/unifi-controller (source)	minor	7.3.83 -> 7.5.187

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Release Notes

linuxserver/docker-unifi-controller (linuxserver/unifi-controller)

### [`v7.5.187`](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.5.176-ls210...7.5.187-ls216) [Compare Source](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.5.176-ls210...7.5.187-ls216) ### [`v7.5.176`](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.5.174-ls207...7.5.176-ls210) [Compare Source](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.5.174-ls207...7.5.176-ls210) ### [`v7.5.174`](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.4.162-ls203...7.5.174-ls207) [Compare Source](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.4.162-ls203...7.5.174-ls207) ### [`v7.4.162`](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.4.156-ls199...7.4.162-ls203) [Compare Source](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.4.156-ls199...7.4.162-ls203) ### [`v7.4.156`](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.3.83-ls194...7.4.156-ls199) [Compare Source](https://redirect.github.com/linuxserver/docker-unifi-controller/compare/7.3.83-ls194...7.4.156-ls199)

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