Fix lint errors (#218)

![Screenshot 2024-08-14 at
12.22.38 PM.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/ak7zkUsSoHh2VQAhtjtL/e30d753e-1ca5-479f-a9cf-69596f39bb38.png)

.github/workflows/golangci-lint.yml

@@ -19,7 +19,7 @@ jobs:
           go-version: 1.16
       - uses: actions/checkout@v3
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v6
         with:
           version: latest
           args: --config=.golangci-lint.yml

client.go

@@ -2,7 +2,6 @@ package statsig
 
 import (
 	"errors"
-	"fmt"
 	"net/http"
 	"strings"
 	"time"
@@ -270,7 +269,7 @@ func (c *Client) OverrideLayer(layer string, val map[string]interface{}) {
 func (c *Client) LogImmediate(events []Event) (*http.Response, error) {
 	if len(events) > 500 {
 		err := errors.New(EventBatchSizeError)
-		return nil, fmt.Errorf(err.Error())
+		return nil, err
 	}
 	events_processed := make([]interface{}, 0)
 	for _, event := range events {

diagnostics_test.go

@@ -568,5 +568,5 @@ func waitForConditionWithMessage(t *testing.T, condition func() bool, errorMsg s
 		time.Sleep(10 * time.Millisecond) // Adjust the polling interval as needed
 	}
 
-	t.Errorf(errorMsg)
+	t.Errorf("%s", errorMsg)
 }

evaluation_test.go

@@ -109,7 +109,7 @@ func TestEvaluation(t *testing.T) {
 }
 
 func test_helper(apiOverride string, t *testing.T) {
-	t.Logf("Testing for " + apiOverride)
+	t.Logf("Testing for %s", apiOverride)
 	InitializeGlobalOutputLogger(getOutputLoggerOptionsForTest(t))
 	c := NewClientWithOptions(secret, &Options{API: apiOverride})
 	var d data

transport.go

@@ -235,7 +235,7 @@ func (transport *transport) doRequest(
 			return response, false, transport.parseResponse(response, out)
 		}
 
-		return response, retryableStatusCode(response.StatusCode), fmt.Errorf(response.Status)
+		return response, retryableStatusCode(response.StatusCode), fmt.Errorf("%s", response.Status)
 	})
 
 	if err != nil {