Revert "github: Add a Dependabot group just for bumping Cargo.lock"

[danielhjacobs]

This reverts commit 6c144a0.

See https://github.com/ruffle-rs/ruffle/runs/25067106580. The only options for the dependency-type of a group are production and development: https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#groups. This was done with the options for allow in mind: https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#allow.

As for update-types, that should have been:

        update-types:
          - "major"
          - "minor"
          - "patch"

[torokati44]

~ This was done with the options for allow in mind: docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#allow.

Isn't it possible to set it there instead, then?

[danielhjacobs]

Isn't it possible to set it there instead, then?

Probably, I just didn't know the right syntax to use to properly fix this. If you want to fix this instead, I'll close this PR.

[torokati44]

Seems like what I wanted is not supported... dependabot/dependabot-core#1778
Too bad... :( Sorry for the spam, should have been more thorough with this.