Update hugo version

Currently the netlify deploy uses hugo v0.53, which is almost 4 years
old and has some big inconsistencies when rendering markdown. This bumps
hugo up to the latest release.

netlify.toml

@@ -3,7 +3,7 @@
   command = "make production-build"
 
 [build.environment]
-  HUGO_VERSION = "0.53"
+  HUGO_VERSION = "0.94.2"
 
 [context.production.environment]
   HUGO_ENV = "production"