[release] v1.31.0 - Array Operators and string match fix (#248)

### New Features
  - added support for array evaluator support
  ### Fixes
  - fix string operator not working with array user input





>Included In This Release
>- d041a2c kat-statsig
>   - arr ops and str fix (#247)

statsig_metadata.go

@@ -14,7 +14,7 @@ type statsigMetadata struct {
 func getStatsigMetadata() statsigMetadata {
 	return statsigMetadata{
 		SDKType:         "go-sdk",
-		SDKVersion:      "v1.30.3",
+		SDKVersion:      "v1.31.0",
 		LanguageVersion: runtime.Version()[2:],
 		SessionID:       SessionID(),
 	}