[compiler-rt] [Fuzzer] Passthrough zlib CMake paths into the test (PR #107926)

[Shoaib Meenai via llvm-commits]

https://github.com/smeenai approved this pull request.

I'm not familiar with the test, but the fix seems pretty straightforward, and hopefully bots have good coverage for this.

https://github.com/llvm/llvm-project/pull/107926