Bump aws-crt-builder to v0.9.84

Author: sfodagain

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
       - 'docs'
 
 env:
-  BUILDER_VERSION: v0.9.67
+  BUILDER_VERSION: v0.9.84
   BUILDER_SOURCE: releases
   BUILDER_HOST: https://d19elf31gohf1l.cloudfront.net
   PACKAGE_NAME: aws-crt-python