ci: bump appveyor node version

yyx990803 · yyx990803 · commit 0b9c837108ca · 2018-06-07T11:28:10.000-04:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,5 +1,5 @@
 environment:
-  nodejs_version: "8"
+  nodejs_version: "10"
 
 install:
   - ps: Install-Product node $env:nodejs_version
