Rollback upload-artifact and download-artifact because of breaking changes

Author: justdan6

.github/workflows/ci-matrix.yml

@@ -65,7 +65,7 @@ jobs:
           touch "/tmp/digests/${digest#sha256:}"
       -
         name: Upload digest
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: digests
           path: /tmp/digests/*
@@ -80,7 +80,7 @@ jobs:
     steps:
       -
         name: Download digests
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v3
         with:
           name: digests
           path: /tmp/digests