Update dependabot.yml

Author: coolya

.github/dependabot.yml

@@ -14,7 +14,7 @@ updates:
     schedule:
       interval: "weekly"
   - package-ecosystem: "docker" # See documentation for possible values
-    directory: "/" # Location of package manifests
+    directory: "/server" # Location of package manifests
     schedule:
       interval: "weekly"
   - package-ecosystem: "npm" # See documentation for possible values