go 1.18

[Jason-Adam]

Created with brew bump-formula-pr.

resource blocks may require updates.

[samford]

Please check open PRs before creating a new one, as there is already a PR for Go 1.18 (#91369). brew bump-formula-pr will error when an open PR may be a duplicate and this is something to pay attention to:

Error: These pull requests may be duplicates:
go 1.18 https://github.com/Homebrew/homebrew-core/pull/91369
Duplicate PRs should not be opened. Use --force to override this error.