Merge pull request #1907 from fluxcd/upgrade-go-1-21-for-netlify

Upgrade GO_VERSION for Netlify (1.21)

Author: kingdonb

netlify.toml

@@ -5,7 +5,7 @@
 [build.environment]
   HUGO_VERSION = "0.122.0"
   NODE_VERSION = "18"
-  GO_VERSION = "1.18"
+  GO_VERSION = "1.21"
 
 [context.production.environment]
   HUGO_ENV = "production"