security: unpin serde version.

As the consensus was concluded across the rust community, this
PR serde-rs/serde#2590 phases out precompiled
blobs from serde_derive.

Signed-off-by: Soc Virnyl Estela <socvirnyl.estela@gmail.com>

rypper-reader/Cargo.toml

@@ -25,5 +25,5 @@ md-5 = "0.10"
 regex = "1.9.1"
 # Pin to the most recent version before 1.0.172
 # https://github.com/serde-rs/serde/issues/2538 is a security risk.
-serde = { version = "1.0.171, <1.0.172", features = ["derive", "alloc"] }
+serde = { version = ">=1.0.184", features = ["derive", "alloc"] }