chore: Included githubactions in the dependabot config

[naveensrinivasan]

This should help with keeping the GitHub actions updated on new releases. This will also help with keeping it secure.

Dependabot helps in keeping the supply chain secure https://docs.github.com/en/code-security/dependabot

GitHub actions up to date https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot

https://github.com/ossf/scorecard/blob/main/docs/checks.md#dependency-update-tool Signed-off-by: naveensrinivasan [email protected]

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Name	Status	Preview	Updated
theme-ui	✅ Ready (Inspect)	Visit Preview	Apr 27, 2022 at 2:12PM (UTC)

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This pull request is automatically built and testable in CodeSandbox.

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Latest deployment of this branch, based on commit 2453096581041ee513dc42190921e82b294a5736:

Sandbox	Source
system-ui/theme-ui	Configuration
gatsby-plugin-theme-ui-example	Configuration

[hasparus]

Hey @naveensrinivasan.

Thank you for the interest in Theme UI. I'm sorry to say that, but we're unfortunately not going to merge this. As a rule of thumb, we are not merging first-time contributors Pull Requests affecting CI.

Our GitHub Actions setup is internal. It doesn't affect the users, but it's a possible vector for attack that can affect them very much.