update readme

Author: crazy-max

README.md

@@ -11,7 +11,6 @@ GitHub Action to expose GitHub runtime to the workflow
 ___
 
 * [Usage](#usage)
-* [Keep up-to-date with GitHub Dependabot](#keep-up-to-date-with-github-dependabot)
 * [Contributing](#contributing)
 * [License](#license)
 
@@ -37,22 +36,6 @@ jobs:
           env|sort
 ```
 
-## Keep up-to-date with GitHub Dependabot
-
-Since [Dependabot](https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-github-dependabot)
-has [native GitHub Actions support](https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#package-ecosystem),
-to enable it on your GitHub repo all you need to do is add the `.github/dependabot.yml` file:
-
-```yaml
-version: 2
-updates:
-  # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"
-```
-
 ## Contributing
 
 Want to contribute? Awesome! The most basic way to show your support is to star the project, or to raise issues. If