ci: add merge-multiple true for ctions/download-artifact

Author: fhussonnois

.github/workflows/early-access.yml

@@ -57,6 +57,7 @@ jobs:
         uses: actions/download-artifact@v4
         with:
           path: artifacts
+          merge-multiple: true
 
       - name: 'Set up Java'
         uses: actions/setup-java@v3

.github/workflows/release.yml

@@ -173,6 +173,7 @@ jobs:
       - name: 'Download all artifacts'
         uses: actions/download-artifact@v4
         with:
+          merge-multiple: true
           path: artifacts
 
       - name: 'Set up Java'