Update dependabot after refactor (#857)

Updates the npm directory that changed in the refactor.
Removes reviewers that are no longer necessary since we now have the CODEOWNERS file.

Author: lucacome

.github/dependabot.yml

@@ -4,23 +4,18 @@ updates:
     directory: "/"
     schedule:
       interval: daily
-    reviewers:
-      - "nginxinc/kubernetes-gateway"
+
   - package-ecosystem: "gomod"
     directory: "/"
     schedule:
       interval: daily
-    reviewers:
-      - "nginxinc/kubernetes-gateway"
+
   - package-ecosystem: "docker"
     directory: "/build"
     schedule:
       interval: daily
-    reviewers:
-      - "nginxinc/kubernetes-gateway"
+
   - package-ecosystem: "npm"
-    directory: "/internal/nginx/modules"
+    directory: "/internal/mode/static/nginx/modules"
     schedule:
       interval: "daily"
-    reviewers:
-      - "nginxinc/kubernetes-gateway"