Cargo.toml: Bump the serde crate

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

Cargo.toml

diff --git a/Cargo.toml b/Cargo.toml
index 9ac3f91..5109187 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,7 +24,7 @@
 corepack = { version = "0.4.0", default-features = false, features = ["alloc"] }
 # We pin the serde version because newer serde versions may not be compatible
 # with the nightly toolchain used by libtock-rs.
-serde = { version = "=1.0.84", default-features = false, features = ["derive"] }
+serde = { version = "=1.0.114", default-features = false, features = ["derive"] }
 
 [[example]]
 name = "alloc_error"