Update CODEOWNERS for keynote_bench.rs #22822

Job	Run time
Lints	3m 43s
Check CI command docs	53s
Test spacetimedb-update flow (aarch64-unknown-linux-gnu)	1m 1s
Check that packages are publishable	34s
Build and test wasm bindings	5m 22s
Test spacetimedb-update flow (x86_64-unknown-linux-gnu)	45s
Test spacetimedb-update flow (aarch64-apple-darwin)	2m 31s
version_upgrade_check	14m 7s
Test spacetimedb-update flow (x86_64-pc-windows-msvc)	6m 43s
Verify global.json files are symlinks	1m 32s
TypeScript - Tests	5m 26s
Check smoketests/mod.rs is complete	11m 59s
Docs build	2m 43s
Check CLI docs	2m 21s
Unreal Engine Tests	0s
unity-testsuite	6m 6s
Test Suite	28m 47s
csharp-testsuite	6m 1s
Keynote Bench	6m 26s
Smoketests (Linux)	19m 13s
Smoketests (Windows)	50m 5s
godot-testsuite	4m 16s
	3h 0m 34s

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