refactor: replace pkg/errors with stdlib errors

[kruskall]

What does this PR do?

use upstream error wrapping and replace pkg/errors usage with stdlib errors.
remove unused nolint comments

Why is it important?

https://github.com/pkg/errors is archived and it is no longer maintained

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in ./changelog/fragments using the changelog tool
• I have added an integration test or an E2E test

Disruptive User Impact

How to test this PR locally

Related issues

Questions to ask yourself

• How are we going to support this in production?
• How are we going to measure its adoption?
• How are we going to debug this?
• What are the metrics I should take care of?
• ...

[mergify]

This pull request does not have a backport label. Could you fix it @kruskall? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 8./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[kruskall]

Seems to be the same error as #4861

[blakerouse]

Yes!!! Thanks for this.

[kruskall]

5.9% Coverage on New Code (required ≥ 40%)

There's no "new code" 😭

[elastic-sonarqube]

Quality Gate failed

Failed conditions
5.9% Coverage on New Code (required ≥ 40%)

See analysis details on SonarQube

[kruskall]

@blakerouse sorry for the ping, can you help with this ? There's no "new code", I'm not sure why the coverage decreased 🤔

[blakerouse]

@kruskall Yeah I have no idea why SonarQube is so wrong here.

@ycombinator @pierrehilbert Could one of you force merge this? Only thing not passing is SonarQube, for an unknown reason.