[MM-55480] Update logr to v2.0.21 (#25431)

server/public/shared/mlog/metrics.go

@@ -0,0 +1,11 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package mlog
+
+import (
+	"github.com/mattermost/logr/v2"
+)
+
+type Gauge = logr.Gauge
+type Counter = logr.Counter