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/tests.yml

@@ -109,7 +109,7 @@ jobs:
         with:
           ruby-version: "${{ matrix.ruby }}"
           bundler-cache: true
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-gem
           path: gems
@@ -142,7 +142,7 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{matrix.ruby}}
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-gem
           path: gems
@@ -164,7 +164,7 @@ jobs:
         with:
           ruby-version: "3.2"
           bundler-cache: true
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-gem
           path: gems
@@ -182,7 +182,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-aarch64-linux-gem
           path: gems
@@ -204,7 +204,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-arm-linux-gem
           path: gems
@@ -229,7 +229,7 @@ jobs:
       - uses: MSP-Greg/setup-ruby-pkgs@v1
         with:
           ruby-version: "${{matrix.ruby}}"
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x64-mingw-ucrt-gem
           path: gems
@@ -249,7 +249,7 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "${{matrix.ruby}}"
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x64-mingw32-gem
           path: gems
@@ -266,7 +266,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x86-linux-gem
           path: gems
@@ -291,7 +291,7 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "${{matrix.ruby}}"
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x86_64-linux-gem
           path: gems
@@ -310,7 +310,7 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: "${{matrix.ruby}}"
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x86_64-darwin-gem
           path: gems
@@ -328,7 +328,7 @@ jobs:
       image: "ruby:${{matrix.ruby}}-alpine"
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
           name: cruby-x86_64-linux-gem
           path: gems