Update swagger parser to 2.1.28 #614

Job	Run time
Build Rust (samples/client/petstore/rust/)	1m 4s
Build Rust (samples/client/others/rust/)	38s
Build Rust (samples/server/petstore/rust-server/)	2m 13s
Build Rust (samples/server/petstore/rust-axum/)	58s
	4m 53s

Provide feedback