Add npm install tasks

Author: eucyt

renovate.json5

@@ -16,6 +16,12 @@
   minimumReleaseAge : "7 days",
   postUpdateOptions: ["npmInstallTwice"],
   ignoreDeps: ["axios"],
+  postUpgradeTasks: {
+    commands: [
+      "npm install --no-audit --no-fund"
+    ],
+    executionMode: "branch"
+  },
   forkProcessing: "enabled",
   packageRules: [
     {