fix: disable workspace default feature #4305

Job	Run time
lint	3m 42s
lint	3m 42s
external-types (opentelemetry)	1m 0s
external-types (opentelemetry)	1m 0s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	2m 13s
non-default-examples (opentelemetry-otlp/examples/basic-otlp)	46s
test (stable)	7m 5s
test (stable)	7m 5s
external-types (opentelemetry-sdk)	1m 11s
external-types (opentelemetry-sdk)	1m 11s
cargo-deny	25s
cargo-deny	25s
coverage	3m 23s
coverage	3m 23s
test (beta)	6m 46s
test (beta)	6m 46s
docs	1m 24s
docs	1m 24s
msrv	6m 51s
msrv	6m 51s
	1h 6m 33s

Provide feedback