Better dependabot lables (#11961)

.github/dependabot.yml

@@ -9,6 +9,7 @@ updates:
     - "engineering"
     - "dependencies"  
     - "backend"
+    - "pip"
 - package-ecosystem: npm
   directory: "/"
   schedule:
@@ -17,3 +18,5 @@ updates:
   labels:
     - "engineering"
     - "dependencies"
+    - "frontend"
+    - "npm"