ci: bump appveyor node version

haoqunjiang · haoqunjiang · commit 4e024b77af82 · 2022-07-07T17:36:36.000+08:00
The dev dependency `@graphql-eslint/eslint-plugin` is causing CI
failures in Node.js 12
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,5 +1,5 @@
 environment:
-  nodejs_version: "12"
+  nodejs_version: "14"
 
 install:
   - ps: Install-Product node $env:nodejs_version
