Remove wildcard versions from Cargo.toml

Author: Tinitto

Cargo.toml

@@ -18,14 +18,14 @@ twox-hash = { version = "1.6.3" }
 clokwerk = "0.3.5"
 
 [target.'cfg(unix)'.dependencies]
-libc = "0.2.*"
+libc = "0.2.137"
 
 [target.'cfg(windows)'.dependencies]
-winapi = { version = "0.3.*", features = ["sysinfoapi"] }
+winapi = { version = "0.3.9", features = ["sysinfoapi"] }
 
 [dev-dependencies]
-serial_test = "*"
-criterion = { version = "0.4.*" }
+serial_test = "0.9.0"
+criterion = { version = "0.4.0" }
 
 [[bench]]
 name = "scdb"