fix(n8n): Fix permissions and add healthcheck path

[stavros-k]

Description

Fixes #

Removed /home/node/.n8n persistence as the /data is used correctly now, and it actually stores the data there.

It needs to have runAsUser: 0

runAsGroup can be ANYTHING. (It starts and can create files through GUI, without errors with any user I tried)
fsGroup HAS to be 1000 (node user)

No idea while tests was passing tests here on CI (with the initial perms), but wouldn't deploy on SCALE (with pvc).
While it would deploy fine with emptyDir

Type of change

• Feature/App addition
• Bugfix
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor of current code

How Has This Been Tested?

Notes:

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests to this description that prove my fix is effective or that my feature works
• I increased versions for any altered app according to semantic versioning

[truecharts-admin]

This PR is locked to prevent necro-posting on closed PRs. Please create a issue or contact staff on discord if you want to further discuss this