Updated the spin crate

Author: SlyMarbo

kernel/Cargo.lock

@@ -11,7 +11,7 @@ lazy_static = {version = "=1.4.0", features = ["spin_no_std"]}
 linked_list_allocator = "=0.9.0"
 pic8259 = "=0.10.1"
 raw-cpuid = {version = "=10.2.0", default-features = false}
-spin = "=0.5.2"
+spin = "=0.9.2"
 uart_16550 = "=0.2.15"
 volatile = "=0.2.6"
 x86_64 = "=0.14.6"