Adjust github workflow go.yml to not fail due to false positives on error test output

[mrutkows]

We have many unit tests that emit "error" output as a valid output from error tests; however, the default "go.yml" workflow provided by github does not know this. As a result, it "fails" the pre-check builds. For example:

=== RUN   TestValidateSyntaxErrorCdx13Test2
Error:  schema_formats.go(463) schema.DisplayJSONErrorDetails() JSON Syntax error: offset: 4452, line 123, character 28: invalid character '[' after object key
--- PASS: TestValidateSyntaxErrorCdx13Test2 (0.00s)

Although the test PASSED, the github action sees the word Error and fails the pre-check.

Adjust command to pass in quiet flag to unit test to not emit any output from tests at all...

[markstur]

lgtm

[mrutkows]

@markstur darn Mark that was a fast review! Thanks!