fix: switch off dependabot for pip/python (#28061)

.github/dependabot.yml

@@ -19,14 +19,11 @@ updates:
     open-pull-requests-limit: 30
     versioning-strategy: increase
 
-  - package-ecosystem: "pip"
+
-    directory: "/requirements/"
+  # - package-ecosystem: "pip"
-    schedule:
+  # NOTE: as dependabot isn't compatible with our python
-      interval: "monthly"
+  # dependency setup (pip-compile-multi), we'll be using
-    labels:
+  # `supersetbot` instead
-      - pip
-      - dependabot
-    open-pull-requests-limit: 30
 
   - package-ecosystem: "npm"
     directory: ".github/actions"