undefined symbols for fuzzer binary_only/frida_libpng

When compiling fuzzers/binary_only/frida_libpng I get `undefined symbols`, see below.

```
$ sw_vers
ProductName: macOS
ProductVersion: 15.3
BuildVersion: 24D60

$ rustc --version
rustc 1.84.0 (9fc6b4312 2025-01-07) (Homebrew)

$ cd fuzzers/binary_only/frida_libpng

$ cargo run
....
Undefined symbols for architecture arm64:
"__frida_g_get_current_dir", referenced from:
frida_gum::process::Process::current_dir::h7ab5639f21cbba14 in libfrida_gum-65f16446e27b8f25.rlib[5](frida_gum-65f16446e27b8f25.frida_gum.a96db2485db9796c-cgu.2.rcgu.o)
"__frida_g_get_home_dir", referenced from:
frida_gum::process::Process::home_dir::h058beb1f826552f2 in libfrida_gum-65f16446e27b8f25.rlib[5](frida_gum-65f16446e27b8f25.frida_gum.a96db2485db9796c-cgu.2.rcgu.o)
"__frida_g_get_tmp_dir", referenced from:
frida_gum::process::Process::tmp_dir::h611516336a6bc0c9 in libfrida_gum-65f16446e27b8f25.rlib[5](frida_gum-65f16446e27b8f25.frida_gum.a96db2485db9796c-cgu.2.rcgu.o)
"_gum_linux_parse_ucontext", referenced from:
frida_gum::backtracer::Backtracer::accurate_with_signal_context::h79e9b1780c65ca38 in libfrida_gum-65f16446e27b8f25.rlib[6](frida_gum-65f16446e27b8f25.frida_gum.a96db2485db9796c-cgu.3.rcgu.o)
frida_gum::backtracer::Backtracer::fuzzy_with_signal_context::h17b4e5c9b22bb179 in libfrida_gum-65f16446e27b8f25.rlib[6](frida_gum-65f16446e27b8f25.frida_gum.a96db2485db9796c-cgu.3.rcgu.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

error: could not compile `frida_fuzzer` (bin "frida_fuzzer") due to 1 previous error

```