Bump to rules_go 0.50.1, golang 1.23.2

Depends on the rules_proto 6.0.2 bump from bazelbuild#1623. This is another
measure to preemptively avoid a warning under Bzlmod that a dependency
uses a newer version or rules_go.

WORKSPACE

@@ -145,10 +145,10 @@ format_repositories()
 
 http_archive(
  name = "io_bazel_rules_go",
- sha256 = "6dc2da7ab4cf5d7bfc7c949776b1b7c733f05e56edc4bcd9022bb249d2e2a996",
+ sha256 = "f4a9314518ca6acfa16cc4ab43b0b8ce1e4ea64b81c38d8a3772883f153346b8",
  urls = [
- "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.39.1/rules_go-v0.39.1.zip",
- "https://github.com/bazelbuild/rules_go/releases/download/v0.39.1/rules_go-v0.39.1.zip",
+ "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.50.1/rules_go-v0.50.1.zip",
+ "https://github.com/bazelbuild/rules_go/releases/download/v0.50.1/rules_go-v0.50.1.zip",
  ],
 )
 
@@ -160,7 +160,7 @@ load(
 
 go_rules_dependencies()
 
-go_register_toolchains(version = "1.19.5")
+go_register_toolchains(version = "1.23.2")
 
 load("@rules_java//java:repositories.bzl", "remote_jdk8_repos")