Bump actions/download-artifact from 2 to 3

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 2 to 3.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v2...v3)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -151,7 +151,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Fetch builder image
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           name: ruby.wasm-builder-${{ matrix.entry.builder }}
       - name: Load builder image
@@ -179,7 +179,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/tags/') || inputs.publish }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           path: release
       - uses: actions/setup-node@v2