False positive - when json.Marshal output is used - cant result in "Potentially unsafe quoting"

**Description of the false positive**

An output of golang json.Marshal is apparently not at risk for `unsafe quoting`

**Code samples or links to source code**
```
...
learned, errMarshal := json.Marshal(guardianSpec.Learned)
...
str := fmt.Sprintf(`[{"op":"replace","path":"/spec/learned","value":%s},{"op":"replace","path":"/spec/samples","value":%d}]`, learned, guardianSpec.NumSamples)
...
```

**URL to the alert on GitHub code scanning (optional)**
https://github.com/knative-extensions/security-guard/pull/236

No repository file or test entry point is named. Start by reviewing the linked code-scanning alert and the Go snippet using json.Marshal, then locate the CodeQL query responsible for the unsafe-quoting warning. Done means the reported safe usage is no longer flagged and coverage for this case is verified.

Written by the indexing model from the issue text.