Handle ioutil deprecations (#53526)

* replace ioutil.ReadFile -> os.ReadFile

* replace ioutil.ReadAll -> io.ReadAll

* replace ioutil.TempFile -> os.CreateTemp

* replace ioutil.NopCloser -> io.NopCloser

* replace ioutil.WriteFile -> os.WriteFile

* replace ioutil.TempDir -> os.MkdirTemp

* replace ioutil.Discard -> io.Discard

pkg/tsdb/azuremonitor/loganalytics/azure-log-analytics-datasource.go

@@ -6,7 +6,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -273,7 +273,7 @@ func (ar *AzureLogAnalyticsResponse) GetPrimaryResultTable() (*types.AzureRespon
 }
 
 func (e *AzureLogAnalyticsDatasource) unmarshalResponse(res *http.Response) (AzureLogAnalyticsResponse, error) {
-	body, err := ioutil.ReadAll(res.Body)
+	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		return AzureLogAnalyticsResponse{}, err
 	}