Decrease open pull requests limit to 5 (#19)

Reduced the open pull requests limit for dependencies and GitHub Actions from 10 to 5.

Author: TimmyMC

.github/dependabot.yml

@@ -8,14 +8,14 @@ updates:
     labels:
       - "dependencies"
       - "patch"
-    open-pull-requests-limit: 10
+    open-pull-requests-limit: 5
     schedule:
       interval: "daily"
   - package-ecosystem: "github-actions"
     directory: "/"
     labels:
       - "dependencies"
       - "patch"
-    open-pull-requests-limit: 10
+    open-pull-requests-limit: 5
     schedule:
       interval: "daily"