docs: add Pomerium

[desimone]

RE: pomerium/pomerium#2223

Checklist

• updated CHANGELOG.md

[jsjoeio]

Thanks for adding this! 🙌

One minor issue with URL (I think)

[codecov]

Codecov Report

Merging #3424 (75e495c) into main (c6d5da1) will not change coverage.
The diff coverage is n/a.

❗ Current head 75e495c differs from pull request most recent head a86c9af. Consider uploading reports for the commit a86c9af to get more accurate results

@@           Coverage Diff           @@
##             main    #3424   +/-   ##
=======================================
  Coverage   59.21%   59.21%           
=======================================
  Files          35       35           
  Lines        1709     1709           
  Branches      379      379           
=======================================
  Hits         1012     1012           
  Misses        559      559           
  Partials      138      138           

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[jsjoeio]

LGTM! Thanks so much @desimone 👍🏼

[repo-ranger]

Thanks for making your first contribution! 🙂

[jsjoeio]

If you want to update the CHANGELOG with your change under "New Version" > "Documentation", then we'll make sure to credit you in the Release Notes for this update. Not required though :)