[Kernel] Replace String.format with parameterized log in SnapshotManager (delta-io#4286)

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## Description
Replaced string formatting with concise logging syntax to improve
readability and maintainability

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Author: chenjian2664

kernel/kernel-api/src/main/java/io/delta/kernel/internal/snapshot/SnapshotManager.java

@@ -539,11 +539,10 @@ private Optional<Long> getStartCheckpointVersion(Engine engine, Optional<Long> v
   private void logDebugFileStatuses(String varName, List<FileStatus> fileStatuses) {
     if (logger.isDebugEnabled()) {
       logger.debug(
-          String.format(
-              "%s: %s",
-              varName,
-              Arrays.toString(
-                  fileStatuses.stream().map(x -> new Path(x.getPath()).getName()).toArray())));
+          "{}: {}",
+          varName,
+          Arrays.toString(
+              fileStatuses.stream().map(x -> new Path(x.getPath()).getName()).toArray()));
     }
   }
 }