Make agentbeat fips compliant

[pchila]

Proposed commit message

Remove from agentbeat non FIPS compliant beats when building with FIPS=true.

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.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Disruptive User Impact

None since agentbeat built without specifying FIPS=true will still include all the previous beats and is built in the same way.

Author's Checklist

• [ ]

How to test this PR locally

Related issues

• Requires FIPS Build #42402

Use cases

Screenshots

Logs

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b make-agentbeat-fips-compliant upstream/make-agentbeat-fips-compliant
git merge upstream/main
git push upstream make-agentbeat-fips-compliant

[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @pchila? 🙏.
For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-8 is the label that automatically backports to all active minor branches for the 8 major.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.