chore: update codeowners of the repository

[piotrmsc]

Related issue(s)

Codeowners where not taken into account on PRs.
a) file is CODEOWNERS with S in the end ;)
b) I have update owners to @Demonsthere and me - aligned with @aeneasr

• I have read the contributing guidelines
  and signed the CLA.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got green light (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added necessary documentation within the code base (if
  appropriate).

Further comments