Cargo.toml in pf2-0.3.0

- old
+ new

@@ -7,9 +7,10 @@
 
 [lib]
 crate-type = ["cdylib"]
 
 [dependencies]
+backtrace-sys2 = { path = "../../crates/backtrace-sys2" }
 env_logger = { version = "0.11.0", optional = true }
 libc = "0.2.149"
 log = "0.4.20"
 rb-sys = { version = "0.9.82", features = ["stable-api", "stable-api-compiled-testing"] } # using stable-api-compiled-testing for generating bindings from Ruby source
 serde = "1.0.189"