chore(ci): switch to renovate (#891)

Signed-off-by: Pavel Boldyrev <627562+bpg@users.noreply.github.com>

.github/dependabot.yml

@@ -1,33 +0,0 @@
-# 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://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-  # Maintain dependencies for Go
-  - package-ecosystem: "gomod"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    commit-message:
-      prefix: chore
-      include: scope
-
-  # Maintain dependencies for build tools
-  - package-ecosystem: "gomod"
-    directory: "/tools"
-    schedule:
-      interval: "weekly"
-    commit-message:
-      prefix: chore
-      include: scope
-
-  # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    commit-message:
-      prefix: chore
-      include: scope

.github/renovate.json5

@@ -0,0 +1,7 @@
+{
+  $schema: "https://docs.renovatebot.com/renovate-schema.json",
+  extends: [
+    "github>bpg/renovate-config",
+    "github>bpg/renovate-config:automerge-github-actions",
+  ],
+}