[ci] Update actions/checkout action to v4

Author: lpinca

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
             node: 18
             os: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
@@ -58,7 +58,7 @@ jobs:
           - arch: x86
             os: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: 14
@@ -79,7 +79,7 @@ jobs:
       contents: write # Needed for softprops/action-gh-release.
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/download-artifact@v3
         with:
           path: prebuilds