Upgrade netdata to v2.4.0

[stephdl]

Brief description
We request to upgrade the netdata Docker image to version v2.4.0
WHY: This version delivers critical bug fixes, security updates

PURPOSE: Ensure a secure, performant, and fully compatible supervision tool

Proposed solution

Update the netdata Docker image to version v2.4.0

Alternative solutions
Remaining on older versions may expose users to known vulnerabilities, compatibility issues, or degraded editing experience. Selective patching is complex due to the tight integration between frontend, backend, and document rendering engines.

Additional context
the netdata Docker image to version v2.4.0 is offering improved stability and broader support for supervision. This version aligns with ongoing updates to office file formats and front-end technologies.

[stephdl]

QA

testing version ghcr.io/nethserver/netdata:2.1.1-dev.1

• direct install no expected issue
• upgrade, no expected issue

keep in mind this PR to the documentation if you are looking to use netdata anonymously or with a netdata cloud account : NethServer/ns8-docs#161

[mrmarkuz]

Direct install and upgrade verified.

• Netdata is working anonymously and with netdata cloud account.