Update zio-opentelemetry to 3.1.15 (#2828)

Author: softwaremill-ci

build.sbt

@@ -951,7 +951,7 @@ lazy val openTelemetryTracingZioBackend = (projectMatrix in file("observability/
   .settings(
     name := "opentelemetry-tracing-zio-backend",
     libraryDependencies ++= Seq(
-      "dev.zio" %% "zio-opentelemetry" % "3.1.14",
+      "dev.zio" %% "zio-opentelemetry" % "3.1.15",
       "io.opentelemetry.semconv" % "opentelemetry-semconv" % openTelemetrySemconvVersion,
       "io.opentelemetry" % "opentelemetry-api" % openTelemetryVersion,
       "io.opentelemetry" % "opentelemetry-sdk-testing" % openTelemetryVersion % Test