go.mod: Bump go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho from 0.55.0 to 0.56.0

go.mod: Bump go.opentelemetry.io/contrib/instrumentation/github.com/labstack/echo/otelecho from 0.55.0 to 0.56.0 #1083