It seems that Go 1.23 is shipped inside container even tinygo doesn't support it.
Using docker image sha256:dd25267fab113b996ca90278cb52e0c9ba1f0566bc925d14d4b6c94118f8d594 for tinygo/tinygo:0.32.0 with digest tinygo/tinygo@sha256:13c736477460fcf6025168da9c6a48f63985230e2f0f9fa30f3411fece3781f5 ...
$ tinygo version
tinygo version 0.32.0 linux/amd64 (using go version go1.23.0 and LLVM version 18.1.2)
$ tinygo build ...
error: requires go version 1.19 through 1.22, got go1.23
It seems that Go 1.23 is shipped inside container even tinygo doesn't support it.