[SQL][TRIVIAL] Lower parser log level to debug

## What changes were proposed in this pull request?
Currently the parser logs the query it is parsing at `info` level. This is too high, this PR lowers the log level to `debug`.

## How was this patch tested?
Existing tests.

Author: Herman van Hovell <hvanhovell@databricks.com>

Closes #18006 from hvanhovell/lower_parser_log_level.

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/ParseDriver.scala

@@ -78,7 +78,7 @@ abstract class AbstractSqlParser extends ParserInterface with Logging {
   protected def astBuilder: AstBuilder
 
   protected def parse[T](command: String)(toResult: SqlBaseParser => T): T = {
-    logInfo(s"Parsing command: $command")
+    logDebug(s"Parsing command: $command")
 
     val lexer = new SqlBaseLexer(new ANTLRNoCaseStringStream(command))
     lexer.removeErrorListeners()