Enable even_odd_versions in bot configuration

[danyeaw]

This PR enables the even_odd_versions setting in the bot section of conda-forge.yml to prevent automated updates to unstable versions.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found some lint.

Here's what I've got...

For recipe/meta.yaml:

• ❌ In conda-forge.yml: $.bot.version_updates = {'even_odd_versions': True}.

  {'even_odd_versions': True} is not valid under any of the given schemas

  Schema

  {
    "anyOf": [
      {
        "$ref": "#/$defs/BotConfigVersionUpdates"
      },
      {
        "type": "null"
      }
    ]
  }

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/17389847039. Examine the logs at this URL for more detail.}

[danyeaw]

@conda-forge-admin please lint

[danyeaw]

@conda-forge-admin please lint

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[pkgw]

I rolled this into #89.