ci: dependabot -> renovate

.github/dependabot.yml

@@ -1,6 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"

.github/workflows/check.yml

@@ -1,9 +1,6 @@
 on:
   push:
-    paths:
+    paths: ["**.nix", "**.lock"]
-      - "**.nix"
-      - "**.lock"
-      - ".github/workflows/check.yml"
 
 jobs:
   check:
@@ -11,8 +8,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: DeterminateSystems/flake-checker-action@v4
-        with:
+      - uses: DeterminateSystems/nix-installer-action@main
-          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix flake check --show-trace --accept-flake-config
-# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json

renovate.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:best-practices",
+    "schedule:weekly",
+    ":automergeAll"
+  ],
+  "nix": {
+    "enabled": true
+  }
+}