Delete .github/dependabot.yml

Signed-off-by: Dmitriy Safronov <zimniy@cyberbrain.pw>

.github/dependabot.yml

----
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/.github/workflows"
-    schedule:
-      interval: "weekly"
-    labels:
-      - "dependencies"