Merge branch '602-fix-race-in-test' into 'main'

Use blocking reader to fix race in test

Closes #602

See merge request https://gitlab.com/gitlab-org/gitlab-shell/-/merge_requests/700



Merged-by: Ash McKenzie <amckenzie@gitlab.com>
Approved-by: Ash McKenzie <amckenzie@gitlab.com>
Co-authored-by: Patrick Bajao <ebajao@gitlab.com>

internal/command/twofactorverify/twofactorverify_test.go

@@ -177,7 +177,7 @@ func TestCanceledContext(t *testing.T) {
 	cmd := &Command{
 		Config:     &config.Config{GitlabUrl: url},
 		Args:       &commandargs.Shell{GitlabKeyId: "wait_infinitely"},
-		ReadWriter: &readwriter.ReadWriter{Out: output, In: &bytes.Buffer{}},
+		ReadWriter: &readwriter.ReadWriter{Out: output, In: &blockingReader{}},
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())