Update cargo files to 0.19.1 (#6093)

sdk-c/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "solana-sdk-c"
-version = "0.19.0-pre0"
+version = "0.19.1"
 description = "Solana SDK C"
 authors = ["Solana Maintainers <maintainers@solana.com>"]
 repository = "https://github.com/solana-labs/solana"
@@ -18,7 +18,7 @@ bs58 = "0.3.0"
 libc = "0.2.62"
 rand_chacha = "0.1.1"
 rand_core = { version = ">=0.2, <0.4", default-features = false }
-solana-sdk = { path = "../sdk", version = "0.19.0-pre0" }
+solana-sdk = { path = "../sdk", version = "0.19.1" }
 solana-ed25519-dalek = "0.2.0"
 
 [build-dependencies]