Replace usage of LD_PRELOAD with LD_LIBRARY_PATH #911

Job	Run time
Smoke-test fuzzing targets	2m 3s
QEMU build & test (stable, ubuntu-latest, s390x-unknown-linux-gnu, s390x-linux-gnu-gcc)	40s
Build and test (stable, ubuntu-latest, x86_64-unknown-linux-gnu)	51s
Smoke-test fuzzing targets (--no-default-features --features="c-allocator")	52s
Clippy	24s
QEMU build & test (stable, ubuntu-latest, i686-unknown-linux-gnu, i686-linux-gnu-gcc)	32s
Build and test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	1m 0s
Clippy (--no-default-features --features="c-allocator")	25s
Smoke-test fuzzing targets (--no-default-features --features="rust-allocator")	48s
Build and test (beta, ubuntu-latest, x86_64-unknown-linux-gnu)	57s
Clippy (--no-default-features --features="rust-allocator")	21s
Build and test (stable, macos-latest, x86_64-apple-darwin)	1m 13s
Smoke-test fuzzing targets (stable, macos-14, aarch64-apple-darwin)	1m 57s
Build and test (stable, macos-14, aarch64-apple-darwin)	52s
dynamic library	23s
Miri	2m 34s
Build and test (stable-x86_64-gnu, windows-2022, x86_64-pc-windows-gnu)	1m 48s
wasm32	37s
	18m 17s

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