[CI] Update actions and configure Dependabot

Author: ikesyo

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# 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: 'weekly'

.github/workflows/compatibility.yml

@@ -9,9 +9,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 1
+        uses: actions/checkout@v4
       - uses: swiftwasm/setup-swiftwasm@v1
         with:
           swift-version: wasm-5.9.1-RELEASE

.github/workflows/npm-publish.yml

@@ -11,8 +11,8 @@ jobs:
   publish-npm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/

.github/workflows/perf.yml

@@ -7,9 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@master
-        with:
-          fetch-depth: 1
+        uses: actions/checkout@v4
       - uses: swiftwasm/setup-swiftwasm@v1
         with:
           swift-version: wasm-5.9.1-RELEASE

.github/workflows/test.yml

@@ -31,9 +31,7 @@ jobs:
       SWIFT_VERSION: ${{ matrix.entry.toolchain }}
     steps:
       - name: Checkout
-        uses: actions/checkout@master
-        with:
-          fetch-depth: 1
+        uses: actions/checkout@v4
       - name: Select SDKROOT
         if: ${{ matrix.entry.xcode }}
         run: sudo xcode-select -s /Applications/${{ matrix.entry.xcode }}
@@ -65,7 +63,7 @@ jobs:
             xcode: Xcode_15.2
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: swift build
         env:
           DEVELOPER_DIR: /Applications/${{ matrix.xcode }}.app/Contents/Developer/