deps: deduplicate the version of libloading used

The changelog can be found here:
https://docs.rs/libloading/latest/libloading/changelog/r0_8_0/index.html

Author: nagisa

Cargo.toml

@@ -19,7 +19,7 @@ gimli = { version = "0.28", default-features = false, features = ["write"]}
 object = { version = "0.32", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
 
 indexmap = "2.0.0"
-libloading = { version = "0.7.3", optional = true }
+libloading = { version = "0.8.0", optional = true }
 smallvec = "1.8.1"
 
 [patch.crates-io]