fix: replace deprecated ioutil.ReadAll with io.ReadAll in healthcheck test

The change was made to update the deprecated ioutil.ReadAll function with the recommended io.ReadAll function in the healthcheck test. This ensures that the codebase stays up to date with best practices and avoids potential issues with deprecated functions in the future.

Author: Keloran

.gitignore

@@ -1,213 +1 @@
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+test_coverage.txt

healthcheck_test.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -90,7 +90,7 @@ func TestHTTP(t *testing.T) {
 		healthcheck.HTTP(response, request)
 		assert.Equal(t, 200, response.Code)
 
-		body, _ := ioutil.ReadAll(response.Body)
+		body, _ := io.ReadAll(response.Body)
 		healthy := healthcheck.Health{}
 		_ = json.Unmarshal(body, &healthy)
 		assert.Equal(t, test.expect, healthy)