Update GitHub Artifact Actions

Author: renovate[bot]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
           go-version: '1.24'
       - run: make test
       - name: Archive code coverage results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: code-coverage-report
           path: bin
@@ -26,7 +26,7 @@ jobs:
       - name: Clone Repository
         uses: actions/checkout@master
       - name: Download code coverage results
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: code-coverage-report
           path: bin