Upgrade GitHub Actions to Node 24-compatible versions

Node 20 actions will stop working in June 2026. Move to the latest
major versions that run on Node 24:

  checkout      v4 → v6
  setup-node    v4 → v6
  upload-artifact v4 → v7
  download-artifact v4 → v8
  cache         v4 → v5

Author: oetr

.github/workflows/release.yaml

@@ -22,9 +22,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: "npm"
@@ -38,7 +38,7 @@ jobs:
           npm run prebuild --workspace=@jazzer.js/fuzzer
           npm run build --workspace=@jazzer.js/fuzzer
       - name: upload
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: native-addon-${{ matrix.os }}
           path: packages/fuzzer/prebuilds
@@ -52,7 +52,7 @@ jobs:
       contents: read
     steps:
       - name: download prebuilds
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           pattern: native-addon-*
           path: prebuilds
@@ -69,9 +69,9 @@ jobs:
       contents: write # for creating releases
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: "npm"
@@ -81,7 +81,7 @@ jobs:
       - name: build
         run: npm run build
       - name: download prebuilds
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           pattern: native-addon-*
           path: packages/fuzzer/prebuilds

.github/workflows/run-all-tests-main.yaml

@@ -12,8 +12,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
-      - uses: actions/cache@v4
+        uses: actions/checkout@v6
+      - uses: actions/cache@v5
         id: cache-fuzzer
         with:
           path: |
@@ -23,7 +23,7 @@ jobs:
             hashFiles('packages/fuzzer/CMakeLists.txt',
             'packages/fuzzer/**/*.h', 'packages/fuzzer/**/*.cpp') }}
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: "npm"

.github/workflows/run-all-tests-pr.yaml

@@ -18,9 +18,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: "npm"
@@ -59,8 +59,8 @@ jobs:
             node: 24
     steps:
       - name: checkout
-        uses: actions/checkout@v4
-      - uses: actions/cache@v4
+        uses: actions/checkout@v6
+      - uses: actions/cache@v5
         id: cache-fuzzer
         with:
           path: |
@@ -70,7 +70,7 @@ jobs:
             hashFiles('packages/fuzzer/CMakeLists.txt',
             'packages/fuzzer/**/*.h', 'packages/fuzzer/**/*.cpp') }}
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
           cache: "npm"
@@ -102,10 +102,10 @@ jobs:
           ]
     steps:
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       # Build with node.js 22
       - name: node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: "npm"
@@ -126,7 +126,7 @@ jobs:
         if: >-
           matrix.os == 'ubuntu-latest' || matrix.os == 'macos-13' || matrix.os
           == 'windows-latest'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 14
       - name: run tests (node 14)
@@ -137,15 +137,15 @@ jobs:
         shell: bash
 
       - name: "node 20"
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 20
       - name: run tests (node 20)
         run: cd end-to-end && npx jest
         shell: bash
 
       - name: "node 24"
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 24
       - name: run tests (node 24)