[SPARK-48804][SQL][TESTS][FOLLOWUP] Fix compilation warning adaptation of an empty argument list by inserting () is deprecated

[LuciferYang]

What changes were proposed in this pull request?

This pr aims to fix a compilation warning related to Scala 2.11:

[warn] /Users/yangjie01/SourceCode/git/spark-mine-sbt/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetCommitterSuite.scala:119:77: adaptation of an empty argument list by inserting () is deprecated: this is unlikely to be what you want
[warn]         signature: SQLTestUtilsBase.withSQLConf[T](pairs: (String, String)*)(f: => T): T
[warn]   given arguments: <none>
[warn]  after adaptation: SQLTestUtilsBase.withSQLConf((): Unit)
[warn] Applicable -Wconf / @nowarn filters for this warning: msg=<part of the message>, cat=deprecation, site=org.apache.spark.sql.execution.datasources.parquet.ParquetCommitterSuite, origin=org.apache.spark.sql.test.SQLTestUtilsBase.withSQLConf, version=2.11.0
[warn]         withSQLConf(SQLConf.PARQUET_OUTPUT_COMMITTER_CLASS.key -> committer)()

Why are the changes needed?

Fix compilation warning

Does this PR introduce any user-facing change?

No

How was this patch tested?

Pass GitHub Actions

Was this patch authored or co-authored using generative AI tooling?

No

[LuciferYang]

cc @yaooqinn