Else if a project, that uses go123, is compiled by go1.18 or go1.19,
then go complains that go123 uses `any`, but the language, that go123
requires in it's go.mod, is only 1.14:

    kirr@deca:~/src/wendelin/wendelin.core/wcfs$ go build
    # lab.nexedi.com/kirr/go123/tracing/internal/xruntime
    /home/kirr/go/pkg/mod/lab.nexedi.com/kirr/go123@v0.0.0-20221005052354-179529a7/tracing/internal/xruntime/zruntime_g_go1.19.go:114:12: predeclared any requires go1.18 or later (-lang was set to go1.14; check go.mod)
    /home/kirr/go/pkg/mod/lab.nexedi.com/kirr/go123@v0.0.0-20221005052354-179529a7/tracing/internal/xruntime/zruntime_g_go1.19.go:184:14: predeclared any requires go1.18 or later (-lang was set to go1.14; check go.mod)
    /home/kirr/go/pkg/mod/lab.nexedi.com/kirr/go123@v0.0.0-20221005052354-179529a7/tracing/internal/xruntime/zruntime_g_go1.19.go:185:9: predeclared any requires go1.18 or later (-lang was set to go1.14; check go.mod)

-> Fix that by expanding `any` to what it is aliased to:

    $ go doc builtin.any
    package builtin // import "builtin"

    type any = interface{}
        any is an alias for interface{} and is equivalent to interface{} in all
        ways.

Go123 wants to support older systems, and so we do not want to bump
go123's required language, at least for now.

For the reference: they started to use `any` somewhere in go1.18 (see
070bfdbb "tracing/runtime: Refresh for Go1.18").