chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
         run: "vendor/bin/phpunit --coverage-clover=coverage.xml"
 
       - name: "Upload coverage file"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: "phpunit-${{ matrix.dependency-versions }}-${{ matrix.php-version }}.coverage"
           path: "coverage.xml"
@@ -118,7 +118,7 @@ jobs:
           fetch-depth: 2
 
       - name: "Download coverage files"
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           path: "reports"