Fix missing string formatting for the lock key

The lack of proper formatting here leads to unnecessary lock contention in high
concurrency setups

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "oxbow"
-version = "0.7.0"
+version = "0.7.1"
 edition = "2021"
 keywords = ["deltalake", "parquet", "lambda", "delta"]
 homepage = "https://github.com/buoyant-data/oxbow"

src/bin/lambda.rs

@@ -74,7 +74,7 @@ async fn func<'a>(event: LambdaEvent<SqsEvent>) -> Result<Value, Error> {
         // when locking in DynamoDb.
         storage_options.insert(
             "DYNAMO_LOCK_PARTITION_KEY_VALUE".into(),
-            "{table_name}:delta".into(),
+            format!("{table_name}:delta"),
         );
         let lock_options = dynamodb_lock::DynamoDbOptions {
             lease_duration: 60,