Fix configuration for branch protection

[seokho-son]

The current settings for branch protection seems not work properly.
(I think some settings of https://github.com/apps/settings are not stable yet)

This PR updates .github/settings.yml and CODEOWNERS to fix configuration on branch protection.
I also suggest following configuration for permission.

• All maintainers (admins) have push permission to all branches.
• Approvers for each localization team have push permission to corresponding development branch (e.g. dev-ko)
  • but they cannot push a commit for files not related with localization contents unless an appropriate owner(reviewer) in CODEOWNERS gives an approving review.
  • they cannot push a commit to main branch

I'v tested https://github.com/apps/settings with a similar configuration in another organization :)
I hope this PR resolves all :)

Please note that

• I temporally set myself as one of admin to check this setting by https://github.com/apps/settings works properly. (we can check this from setting tap)
• I intentionally removed branch setting for Portuguese temporally. (Let's check configuration for Korean branch works firstly)

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[seokho-son]

Some references

• https://github.com/apps/settings
• https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners

[seokho-son]

If this PR works, repository setting for branch will look like this.

[seokho-son]

@JasonMorgan PTAL this PR :)

[JasonMorgan]

Hey @seokho-son it looks good with the exception that @murillodigital is moving to emeritus status and shouldn't be included in maintainers/owners.

[JasonMorgan]

Can we drop murillodigital from maintainers?

[seokho-son]

@JasonMorgan Thanks !
I updated codeowner and settings according to the emeritus status. ;)