Update .github/dependabot.yml

Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>

.github/dependabot.yml

@@ -5,5 +5,5 @@ updates:
   - package-ecosystem: "github-actions"  # Specifies the ecosystem to check for updates
     directory: "/"  # Specifies the directory to check for dependencies; "/" means the root directory
     schedule:
-      # Check for updates to GitHub Actions every weekday
+      # Check for updates to GitHub Actions every month
       interval: "monthly"