Bump actions/download-artifact from 4 to 5

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/gh-pages.yml

@@ -59,7 +59,7 @@ jobs:
           java-version: 17
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: build-artifacts
           path: .

.github/workflows/gradle-build.yml

@@ -23,7 +23,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: build-artifacts
           path: .

.github/workflows/test-java-os-mix.yml

@@ -56,7 +56,7 @@ jobs:
           java-version: ${{ matrix.java-version }}
 
       - name: Download Artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: build-artifacts
           path: .