Update README.md with CrowdSec mention

[mazzma12]

Please make sure all below checkboxes have been checked before submitting your PR.

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• The topic I added
  • [x] includes a valid (https) link,
  • [x] includes a concise and on-topic description,
  • [x] mentions if there is only support some devices,
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Name	Status	Preview	Updated
awesome-raspberry-pi	❌ Failed (Inspect)		Jun 15, 2022 at 8:57AM (UTC)

[thibmaek]

This is just a general tool for selfhosted/cloud security and not specific to the RPI