pull in latest builder version that handles python 3.10 on ubuntu-18-x64

Author: sbSteveK

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
       - 'docs'
 
 env:
-  BUILDER_VERSION: v0.9.85
+  BUILDER_VERSION: v0.9.86
   BUILDER_SOURCE: releases
   BUILDER_HOST: https://d19elf31gohf1l.cloudfront.net
   PACKAGE_NAME: aws-crt-python