Update vmm-sys-util and use caret dependencies

See rust-vmm/community#136

Signed-off-by: Patrick Roy <roypat@amazon.co.uk>

crates/vm-superio-ser/Cargo.toml

@@ -10,9 +10,9 @@ license = "Apache-2.0 OR BSD-3-Clause"
 edition = "2018"
 
 [dependencies]
-serde = { version = ">=1.0.27", features = ["derive"] }
-versionize = ">=0.1.6"
-versionize_derive = ">=0.1.3"
+serde = { version = "1.0.27", features = ["derive"] }
+versionize = "0.1.6"
+versionize_derive = "0.1.4"
 # Combining both `version` and `path` so that it is possible to publish
 # the crate on crates.io. More details here:
 # https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#multiple-locations.
@@ -22,6 +22,6 @@ versionize_derive = ">=0.1.3"
 vm-superio = { version = "=0.6.0", path = "../vm-superio" }
 
 [dev-dependencies]
-libc = ">=0.2.39"
-vmm-sys-util = ">=0.7.0"
-bincode = ">=1.3"
+libc = "0.2.39"
+vmm-sys-util = "0.11.0"
+bincode = "1.3"

crates/vm-superio/Cargo.toml

@@ -10,5 +10,5 @@ license = "Apache-2.0 OR BSD-3-Clause"
 edition = "2018"
 
 [dev-dependencies]
-libc = ">=0.2.39"
-vmm-sys-util = ">=0.7.0"
+libc = "0.2.39"
+vmm-sys-util = "0.11.0"