fix: remove log printing env vars (#2069)

## Description:
remove log printing env vars

## Is this change user facing?
NO

## References (if applicable):
<!-- Add relevant Github Issues, Discord threads, or other helpful
information. -->

container-engine-lib/lib/backend_impls/metrics_reporting/metrics_reporting_kurtosis_backend.go

@@ -213,11 +213,11 @@ func (backend *MetricsReportingKurtosisBackend) CreateAPIContainer(
 		customEnvVars,
 	)
 	if err != nil {
+		// WARNING: remember not to print 'customEnvVars' because it could end up creating a secret info leak
 		return nil, stacktrace.Propagate(
 			err,
-			"An error occurred creating an API container from image '%v' with envvars: %+v",
+			"An error occurred creating an API container from image '%v'",
 			image,
-			customEnvVars,
 		)
 	}
 	return result, nil