cargo: bump version to v1.6.0

Author: devraza

Cargo.lock

@@ -2,7 +2,7 @@
 name = "bunbun"
 description = "A simple and adorable sysinfo utility."
 authors = ["Muhammad Nauman Raza <[email protected]>"]
-version = "1.5.0"
+version = "1.6.0"
 edition = "2024"
 categories = ["command-line-utilities"]
 license = "MPL-2.0"