build(deps): bump github.com/goplus/gogen from 1.16.3 to 1.16.4

Bumps [github.com/goplus/gogen](https://github.com/goplus/gogen) from 1.16.3 to 1.16.4.
- [Release notes](https://github.com/goplus/gogen/releases)
- [Commits](https://github.com/goplus/gogen/compare/v1.16.3...v1.16.4)

---
updated-dependencies:
- dependency-name: github.com/goplus/gogen
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/goplus/llgo
 go 1.20
 
 require (
-	github.com/goplus/gogen v1.16.3
+	github.com/goplus/gogen v1.16.4
 	github.com/goplus/llvm v0.8.0
 	github.com/goplus/mod v0.13.13
 	github.com/qiniu/x v1.13.10