fix: create target directory in fuzz targets #697

Job	Run time
cargo fmt --all -- --check	9s
cargo clippy -- -D warnings (ubuntu-latest)	13s
Code Coverage (ubuntu-latest, unix)	2m 4s
GNU test suite	34s
cargo clippy -- -D warnings (macOS-latest)	17s
Code Coverage (windows-latest, windows)	6m 43s
cargo check (macOS-latest)	13s
cargo check (windows-latest)	1m 4s
cargo test (macOS-latest)	2m 5s
cargo check (ubuntu-latest)	12s
cargo test (ubuntu-latest)	43s
Code Coverage (macos-latest, macos)	3m 12s
cargo clippy -- -D warnings (windows-latest)	45s
cargo test (windows-latest)	5m 7s
	23m 21s

Provide feedback