Update GitHub Artifact Actions

Author: renovate[bot]

.github/workflows/ci.yml

@@ -56,13 +56,13 @@ jobs:
           detailed_summary: true
           skip_success_summary: true
       - name: Archive HTML test reports
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: always()
         with:
           name: vitest-reports
           path: test/html_reports/*
       - name: Archive coverage report
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: always()
         with:
           name: vitest-coverage
@@ -113,13 +113,13 @@ jobs:
           detailed_summary: true
           skip_success_summary: true
       - name: Archive HTML test reports
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: always()
         with:
           name: minitest-reports
           path: test/html_reports/*
       - name: Archive coverage report
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         if: always()
         with:
           name: minitest-coverage
@@ -225,7 +225,7 @@ jobs:
         run: tar cfz doc-site.tar.gz ./doc-site/build
       - name: Store built site
         if: github.event_name == 'push' && github.event.ref == 'refs/heads/main'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: doc-site
           path: doc-site.tar.gz
@@ -237,12 +237,12 @@ jobs:
       - minitest
     steps:
       - name: Download Minitest coverage
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: minitest-coverage
           path: minitest-coverage
       - name: Download Vitest coverage
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: vitest-coverage
           path: vitest-coverage