kem v0.3.0-rc.6 (#2285)

One more release for the `FromSeed` trait (#2284), but this should
really hopefully be it, with every part of KEMs as a construction now
finally covered

Author: tarcieri

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "kem"
-version = "0.3.0-rc.5"
+version = "0.3.0-rc.6"
 authors = ["RustCrypto Developers"]
 edition = "2024"
 rust-version = "1.85"