hotfix: actions/download-artifact@v3 to v4

Author: begonaalvarezd

.github/workflows/build-artifact-assembly.yaml

@@ -24,5 +24,5 @@ jobs:
           name: ASSEMBLY_Blog
           path: liebling.zip
       - name: Download all workflow run artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
 

.github/workflows/build-artifact-iota.yaml

@@ -23,4 +23,4 @@ jobs:
           name: IOTA_Blog
           path: liebling.zip
       - name: Download all workflow run artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4

.github/workflows/build-artifact-shimmer.yaml

@@ -23,4 +23,4 @@ jobs:
           name: SHIMMER_Blog
           path: liebling.zip
       - name: Download all workflow run artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4