ci: add dependabot (#11)

.github/dependabot.yml

@@ -0,0 +1,14 @@
+# 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: /
+    schedule:
+      interval: daily
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-patch"]

.github/workflows/lint.yaml

@@ -15,11 +15,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "checkout repo"
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: asdf_install
-        uses: asdf-vm/actions/install@v1
+        uses: asdf-vm/actions/install@v3
       - name: "linting: ${{ matrix.files }}"
         run: npx -y awesome-lint ${{ matrix.files }}
   awesome-bot:
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "checkout repo"
-        uses: actions/checkout@v2.0.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: "setup ruby"