chore: update .editorconfig

[ghost]

What kind of change does this PR introduce?

Remove unnecessary code duplication in the .editorconfig file.

indent_size= 2 is already defined in the [ * ] section, so it is redundant to repeat it in the [*.{yml,yaml,json}] section.

Did you add tests for your changes?

no need

Does this PR introduce a breaking change?

no

What needs to be documented once your changes are merged?

none

[linux-foundation-easycla]

• ✅login: vemanoel / (a8fa572)

The committers listed above are authorized under a signed CLA.

[webpack-bot]

For maintainers only:

• This needs to be documented (issue in webpack/webpack.js.org will be filed when merged)
• This needs to be backported to webpack 4 (issue will be created when merged)

[webpack-bot]

Hi @veamaral.

Just a little hint from a friendly bot about the best practice when submitting pull requests:

Don't submit pull request from your own main branch. It's recommended to create a feature branch for the PR.

You don't have to change it for this PR, just make sure to follow this hint the next time you submit a PR.