Chore: Upgrade Prometheus to 2.43.0 (#67853)

- github.com/prometheus/prometheus => 2.43.0 (aka 0.43.0)
- github.com/prometheus/client_golang => 1.15.1

pkg/services/ngalert/sender/notifier_ext.go

@@ -17,12 +17,10 @@ import (
 	"sync"
 	"time"
 
-	"go.uber.org/atomic"
-
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
-	"github.com/pkg/errors"
 	"github.com/prometheus/prometheus/config"
+	"go.uber.org/atomic"
 )
 
 // ApplyConfig updates the status state as the new config requires.
@@ -192,7 +190,7 @@ func (n *Manager) sendOne(ctx context.Context, c *http.Client, url string, b []b
 
 	// Any HTTP status 2xx is OK.
 	if resp.StatusCode/100 != 2 {
-		return errors.Errorf("bad response status %s", resp.Status)
+		return fmt.Errorf("bad response status %s", resp.Status)
 	}
 
 	return nil