[SPARK-40819][SQL][FOLLOWUP] Update SqlConf version for nanosAsLong configuration

As requested by HyukjinKwon in #38312  NB: This change needs to be backported

### What changes were proposed in this pull request?

Update version set for "spark.sql.legacy.parquet.nanosAsLong"  configuration in SqlConf. This update is required because the previous PR set version to `3.2.3` which has already been released. Updating to version `3.2.4` will correctly reflect when this configuration element was added

### Why are the changes needed?

Correctness and to complete SPARK-40819

### Does this PR introduce _any_ user-facing change?

No, this is merely so this configuration element has the correct version

### How was this patch tested?

N/A

Closes #39943 from awdavidson/SPARK-40819_sql-conf.

Authored-by: awdavidson <54780428+awdavidson@users.noreply.github.com>
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
(cherry picked from commit 409c661)
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>

Author: awdavidson

sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala

@@ -3790,7 +3790,7 @@ object SQLConf {
   val LEGACY_PARQUET_NANOS_AS_LONG = buildConf("spark.sql.legacy.parquet.nanosAsLong")
     .internal()
     .doc("When true, the Parquet's nanos precision timestamps are converted to SQL long values.")
-    .version("3.2.3")
+    .version("3.2.4")
     .booleanConf
     .createWithDefault(false)