[chore] update otel libraries (#3740)

* chore: update otel dependencies

* refactor: combine tracing & metrics in observability package

* chore: update example tracing compose file

internal/observability/no_otel.go

@@ -0,0 +1,46 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+//go:build nootel
+
+package observability
+
+import (
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+
+	"github.com/gin-gonic/gin"
+	"github.com/uptrace/bun"
+)
+
+func InitializeMetrics(db db.DB) error {
+	return nil
+}
+func InitializeTracing() error {
+	return nil
+}
+
+func MetricsMiddleware() gin.HandlerFunc {
+	return nil
+}
+
+func TracingMiddleware() gin.HandlerFunc {
+	return nil
+}
+
+func InstrumentBun(traces bool, metrics bool) bun.QueryHook {
+	return nil
+}