fix: submodule

Signed-off-by: MBWhite <whitemat@uk.ibm.com>

Author: mbwhite

isthmus/src/main/java/io/substrait/isthmus/OuterReferenceResolver.java

@@ -41,7 +41,7 @@ public OuterReferenceResolver() {
     nestedDepth = new HashMap<>();
     fieldAccessDepthMap = new IdentityHashMap<>();
   }
-  
+
   /**
    * Applies the resolver to a {@link RelNode} tree, computing the depth map.
    *

isthmus/src/main/java/io/substrait/isthmus/expression/FunctionConverter.java

@@ -158,8 +158,8 @@ public FunctionConverter(
 
   /**
    * Resolves a Calcite {@link SqlOperator} from a Substrait function key (Substrait → Calcite).
-   * <p>
-   * Given a Substrait function key (e.g., "concat:str_str") and output type, this method finds
+   *
+   * <p>Given a Substrait function key (e.g., "concat:str_str") and output type, this method finds
    * the corresponding Calcite {@link SqlOperator}. When multiple operators match, the output type
    * is used to disambiguate.
    *

isthmus/src/main/java/io/substrait/isthmus/expression/FunctionMappings.java

@@ -140,7 +140,6 @@ public class FunctionMappings {
           .addAll(AGGREGATE_SIGS)
           .build();
 
-  
   /** Type-based resolvers to disambiguate Calcite operators by expected output type. */
   public static final Map<SqlOperator, TypeBasedResolver> OPERATOR_RESOLVER =
       Map.of(