Fix CacheUpdate implementations for extra FullEvents #1035

Job	Run time
Build docs	51s
Examples	1m 11s
Test (macOS)	45s
Check minimal versions	46s
MSRV	0s
Test (nightly)	56s
Test (stable)	52s
Test (beta)	1m 3s
Test (Windows)	3m 17s
Test (native-tls)	43s
Test (no default features)	56s
Test (no cache)	2m 6s
Test (no gateway)	1m 52s
Test (unstable Discord API features)	52s
Test (zlib compression)	38s
Test (zstd compression)	46s
Test (zlib and zstd compression)	47s
Test (chrono, chrono)	42s
Test (unstable API + typesize, default unstable typesize, true)	40s
Test (builder without model, builder, true)	23s
Test (unstable Discord API (no default features), unstable, true)	18s
	20m 24s

Provide feedback