Update WORKSPACE to use the latest version of Go + deps.
Update WORKSPACE to use the latest version of Go + deps.

Move the toolchain/dependecy calls to the end of the file to avoid
conflicts with other rules.

Ran 'bazel run //:gazelle -- update-repos' on the 'go_repository' rules
to ensure they're up to date.

google/devx-tools,google/devx-tools