fix(dependabot): remove labels that don't exist in repo

- Remove labels section from dependabot.yaml (requires pre-existing labels)
- Update template in 130-git.mdc with note about labels requirement

Author: d-padmanabhan

.github/dependabot.yaml

@@ -15,9 +15,6 @@ updates:
       time: "00:00"
       timezone: UTC
     open-pull-requests-limit: 10
-    labels:
-      - dependencies
-      - github-actions
 
   # npm (for MCP server and any JS tooling)
   - package-ecosystem: npm
@@ -30,6 +27,3 @@ updates:
       time: "00:00"
       timezone: UTC
     open-pull-requests-limit: 5
-    labels:
-      - dependencies
-      - npm

rules/130-git.mdc

@@ -756,9 +756,6 @@ updates:
       time: "00:00"
       timezone: UTC
     open-pull-requests-limit: 10
-    labels:
-      - dependencies
-      - github-actions
 
   # Add additional ecosystems as needed:
   # - package-ecosystem: pip
@@ -772,6 +769,9 @@ updates:
   #     timezone: UTC
 ```
 
+> [!NOTE]
+> If you want to use `labels:`, create the labels in your repository first via GitHub UI or API.
+
 ---
 
 ### Pre-commit Configuration