Update dependency del to v8

Author: renovate[bot]

javascript-practice/simple-side-bar/package.json

@@ -34,7 +34,7 @@
     },
     "devDependencies": {
         "browser-sync": "2.26.14",
-        "del": "6.0.0",
+        "del": "8.0.1",
         "gulp": "4.0.2",
         "merge-stream": "2.0.0"
     }