set nonnteractive

Author: ElectricalBoy

.github/workflows/update visual snapshots.yml

@@ -29,6 +29,8 @@ jobs:
         # Workaround until https://github.com/leafo/gh-actions-lua/issues/57 is resolved
         # uses: leafo/gh-actions-lua@v11
         uses: lewis6991/gh-actions-lua@01aab24c4de9555717b685f9b142a2abbe12ef14
+        env:
+          DEBIAN_FRONTEND: noninteractive
         with:
           luaVersion: '5.1'