chore(ci): fix lazer solana contract ci (#2847)

Author: Riateche

lazer/contracts/solana/Cargo.lock

@@ -6,6 +6,9 @@ description = "Pyth Lazer Solana contract and SDK."
 license = "Apache-2.0"
 repository = "https://github.com/pyth-network/pyth-crosschain"
 
+# Forces recent toolchains to create a lockfile compatible with the current anchor/solana version.
+rust-version = "1.75.0"
+
 [lib]
 crate-type = ["cdylib", "lib"]
 name = "pyth_lazer_solana_contract"

lazer/contracts/solana/programs/pyth-lazer-solana-contract/Cargo.toml

@@ -41,10 +41,8 @@ impl TryFrom<&Timestamp> for TimestampUs {
 impl From<TimestampUs> for Timestamp {
     fn from(value: TimestampUs) -> Self {
         Timestamp {
-            #[allow(
-                clippy::cast_possible_wrap,
-                reason = "u64 to i64 after this division can never overflow because the value cannot be too big"
-            )]
+            // u64 to i64 after this division can never overflow because the value cannot be too big
+            #[allow(clippy::cast_possible_wrap)]
             seconds: (value.0 / 1_000_000) as i64,
             nanos: (value.0 % 1_000_000) as i32 * 1000,
             special_fields: Default::default(),