ci: dependabot reduce open pr to 2, change target branch

Signed-off-by: Carus Kyle <[email protected]>

Author: Carus11

.github/dependabot.yml

@@ -10,18 +10,21 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-    open-pull-requests-limit: 5
+    target-branch: "staging"
+    open-pull-requests-limit: 2
 
   # Docker dependencies
   - package-ecosystem: "docker"
     directory: "/"
     schedule:
       interval: "weekly"
-    open-pull-requests-limit: 5
+    target-branch: "staging"
+    open-pull-requests-limit: 2
 
   # GitHub Actions
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "weekly"
-    open-pull-requests-limit: 5
+    target-branch: "staging"
+    open-pull-requests-limit: 2