chore(deps): update dependency ava to v0.25.0 (#120)

Author: renovate[bot]

compute/startup-script/package.json

@@ -8,7 +8,7 @@
   },
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "2.2.3",
-    "ava": "0.23.0",
+    "ava": "0.25.0",
     "uuid": "^3.2.1"
   },
   "scripts": {