chore(ci): pin actions to SHAs, add Dependabot with cooldown and grouping

.github/actions/build-test-wasm/action.yaml

@@ -7,10 +7,10 @@ inputs:
 runs:
   using: 'composite'
   steps:
-      - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
       - run: yarn install
         shell: bash
       - name: Install wasm-pack
@@ -24,7 +24,7 @@ runs:
       - name: Test WASM
         run: node test_wasm.js ${{ inputs.crate }}
         shell: bash
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: prebuilds-wasm-${{ inputs.crate }}
           if-no-files-found: ignore

.github/dependabot.yml

@@ -0,0 +1,17 @@
+# Dependabot version updates
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 5
+      exclude:
+        - "@datadog/*"
+    groups:
+      gh-actions-packages:
+        patterns:
+          - "*"

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
           - library_config
           - datadog-js-zstd
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: 'Use composite action'
         uses: ./.github/actions/build-test-wasm
         with:
@@ -38,10 +38,10 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
       - run: yarn install
       - name: Compute module size tree and report
         uses: qard/heaviest-objects-in-the-universe@v1

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
           - library_config
           - datadog-js-zstd
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: 'Use composite action'
         uses: ./.github/actions/build-test-wasm
         with:
@@ -40,9 +40,9 @@ jobs:
     outputs:
       pkgjson: ${{ steps.pkg.outputs.json }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: '24'
           registry-url: 'https://registry.npmjs.org'