Add a dummy test to satisfy `nextest`. #119

Job	Run time
cargo check (msrv) (windows-latest)	49s
cargo clippy (wasm32)	26s
cargo check (msrv) (macos-latest)	19s
cargo check (msrv) (wasm32)	20s
cargo clippy (windows-latest)	48s
cargo clippy (macos-latest)	27s
cargo check (msrv) (ubuntu-latest)	20s
cargo doc	17s
cargo clippy (ubuntu-latest)	23s
formatting	24s
cargo test (windows-latest)	41s
cargo test (wasm32)	14s
typos	4s
cargo test (macos-latest)	23s
cargo test (ubuntu-latest)	15s
	6m 10s

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