Go version inconsistency fails local unit tests

[Kouteki]

Current state

Master repo uses go1.22 to transpile and check. Local tests run go build through go/exec, using the Go version on the machine. This can cause tests to fail due to version differences.

Desired state

Tests just work.

Misc

• Maybe within GNOROOT we can make this use the go toolchain on the repo. so... go run cmd/go build?
• Perhaps something like this is the way to go to keep the backward compatibility, func isValidError(output string) bool {return strings.Contains(output, "declared and not used")} but it won’t be clean, so hopefully there won’t be much mismatch that we need to handle
• Maybe ensuring we use a consistent version (the one in go.mod) when testing is the best approach here, although the need of manually maintaining version changes is still required.

[zivkovicmilos]

The test in question is:
Test_Scripts/gno_transpile/gobuild_flag_build_error

[ltzmaxwell]

Additional information:

=== PAUSE Test_Scripts/gno_transpile/gobuild_flag_build_error
=== CONT  Test_Scripts/gno_transpile/gobuild_flag_build_error
    testscript.go:558: WORK=$WORK
        PATH=...
        GOTRACEBACK=system
        HOME=/var/folders/dx/v25kly5d1ynd2y4ccs6cy77r0000gn/T/gno2113607741
        TMPDIR=$WORK/.tmp
        devnull=/dev/null
        /=/
        :=:
        $=$
        exe=
        GNOROOT=/Users/zmilos/Work/gno
        GO111MODULE=off
        
        # Run gno transpile with -gobuild flag (1.813s)
        > ! gno transpile -gobuild .
        [stderr]
        main.gno:4:6: declared and not used: x
        main.gno:5:6: declared and not used: y
        2 transpile error(s)
        
        gno command error: exit status 1
        > ! stdout .+
        > stderr '^main.gno:4:6: x declared and not used$'
        FAIL: /Users/zmilos/Work/gno/gnovm/cmd/gno/testdata/gno_transpile/gobuild_flag_build_error.txtar:6: no match for `^main.gno:4:6: x declared and not used$` found in stderr
        
--- FAIL: Test_Scripts/gno_transpile/gobuild_flag_build_error (1.83s)