reduce logging for SpecialValueTransformer (#12970)

diff --git a/pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/SpecialValueTransformer.java b/pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/SpecialValueTransformer.java
index d019384..1075ff3 100644
--- a/pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/SpecialValueTransformer.java
+++ b/pinot-segment-local/src/main/java/org/apache/pinot/segment/local/recordtransformer/SpecialValueTransformer.java
@@ -111,7 +111,7 @@
       }
     }
     if (_negativeZeroConversionCount > 0 || _nanConversionCount > 0) {
-      LOGGER.info("Converted {} -0.0s to 0.0 and {} NaNs to null", _negativeZeroConversionCount, _nanConversionCount);
+      LOGGER.debug("Converted {} -0.0s to 0.0 and {} NaNs to null", _negativeZeroConversionCount, _nanConversionCount);
     }
     return record;
   }