Modified the link & linked security documentation (#924)

README.md

@@ -75,7 +75,7 @@ on:
       - main
 ```
 
-It's recommended that you use [Dependabot](https://dependabot.com/github-actions/) to keep your workflow up-to-date. You can find the latest tagged version on the [GitHub Marketplace](https://github.com/marketplace/actions/deploy-to-github-pages) or on the [releases page](https://github.com/JamesIves/github-pages-deploy-action/releases).
+It's recommended that you use [Dependabot](https://docs.github.com/en/code-security/supply-chain-security/managing-vulnerabilities-in-your-projects-dependencies/configuring-dependabot-security-updates) to keep your workflow up-to-date and [secure](https://github.com/features/security). You can find the latest tagged version on the [GitHub Marketplace](https://github.com/marketplace/actions/deploy-to-github-pages) or on the [releases page](https://github.com/JamesIves/github-pages-deploy-action/releases).
 
 #### Install as a Node Module 📦