build(deps): bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -490,7 +490,7 @@ jobs:
     - rust-complex-linux
     - oci-linux
     steps:
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: rust-complex-x86_64-unknown-linux-musl
     - run: chmod +x ./rust-complex-x86_64-unknown-linux-musl
@@ -500,10 +500,10 @@ jobs:
     runs-on: macos-12
     needs: rust-complex-linux
     steps:
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: rust-complex-aarch64-apple-darwin
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: rust-complex-x86_64-apple-darwin
     - run: chmod +x ./rust-complex-x86_64-apple-darwin
@@ -520,7 +520,7 @@ jobs:
     runs-on: windows-2022
     needs: rust-complex-linux
     steps:
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: rust-complex-x86_64-pc-windows-gnu
     - run: '& .\rust-complex-x86_64-pc-windows-gnu'