fix: enable needed opentelemetry feature

Author: mladedav

Cargo.toml

@@ -64,7 +64,7 @@ opentelemetry-0-27 = { package = "opentelemetry", version = "0.27.0", default-fe
 tracing-opentelemetry-0-29 = { package = "tracing-opentelemetry", version = "0.29.0", default-features = false, optional = true }
 opentelemetry-0-28 = { package = "opentelemetry", version = "0.28.0", default-features = false, optional = true }
 tracing-opentelemetry-0-30 = { package = "tracing-opentelemetry", version = "0.30.0", default-features = false, optional = true }
-opentelemetry-0-29 = { package = "opentelemetry", version = "0.29.0", default-features = false, optional = true }
+opentelemetry-0-29 = { package = "opentelemetry", version = "0.29.0", default-features = false, features = ["futures"], optional = true }
 tracing-opentelemetry-0-31 = { package = "tracing-opentelemetry", version = "0.31.0", default-features = false, optional = true }
 opentelemetry-0-30 = { package = "opentelemetry", version = "0.30.0", default-features = false, optional = true }