update check for sudo in workflow

.github/workflows/playwright.yml

@@ -15,7 +15,7 @@ jobs:
         node-version: lts/*
     - name: Install dependencies 
       run: |
-        which sudo || apt-get update && apt-get install sudo
+        [ -z $(command -v sudo) ] && apt-get update && apt-get install sudo
         sudo apt-get update
         sudo apt-get install -y jq xdg-utils xvfb
         curled=$(curl -L https://github.com/obsidianmd/obsidian-releases/raw/refs/heads/master/desktop-releases.json | jq .latestVersion | sed s/\"//g)