Adjust field in LinkCapabilities struct #931

Job	Run time
Check code formatting	9s
Clippy (libsignal-service-actix)	1m 42s
Build (libsignal-service-actix, Rust stable)	1m 51s
Clippy (libsignal-service-hyper)	1m 11s
Build (libsignal-service-actix, Rust beta)	2m 9s
Clippy (libsignal-service-hyper, unsend-futures)	1m 25s
Build (libsignal-service-actix, Rust nightly)	4m 19s
Clippy (libsignal-service)	1m 1s
Build (libsignal-service-hyper, Rust stable)	1m 38s
Clippy (libsignal-service, unsend-futures)	1m 16s
Build (libsignal-service-hyper, Rust stable)	2m 3s
Build (libsignal-service-hyper, Rust beta)	1m 38s
Build (libsignal-service-hyper, Rust nightly)	3m 44s
Build (libsignal-service, Rust stable)	2m 32s
Build (libsignal-service, Rust stable)	1m 43s
Build (libsignal-service, Rust beta)	1m 17s
Build (libsignal-service, Rust nightly)	3m 18s
Build (libsignal-service-actix, Rust 1.75)	1m 52s
	34m 48s

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