go1.26 support

$ go version
```
go version go1.26.0 darwin/arm64
```

$ ./tinygo-0.40.1/bin/tinygo version
```
tinygo version 0.40.1 darwin/arm64 (using go version go1.26.0 and LLVM version 20.1.1)
```

$ ./tinygo-0.40.1/bin/tinygo flash -target=esp32c3 main.go
```
requires go version 1.19 through 1.25, got go1.26
```
exit status 1

