Update v.neighbors.txt

Additional options for aggregate statistics, based on https://grass.osgeo.org/grass82/manuals/v.neighbors.html

python/plugins/grassprovider/description/v.neighbors.txt

@@ -2,6 +2,7 @@ v.neighbors
 Makes each cell value a function of attribute values and stores in an output raster map.
 Vector (v.*)
 QgsProcessingParameterFeatureSource|input|Input vector layer|-1|None|False
-QgsProcessingParameterEnum|method|Neighborhood operation|count|False|0|False
+QgsProcessingParameterEnum|method|Method for aggregate statistics (count if non given)|count;sum;average;median;mode;minimum;maximum;range;stddev;variance;diversity|False|0|False
+QgsProcessingParameterField|points_column|Column name of points map to use for statistics|None|input|0|False|True
 QgsProcessingParameterNumber|size|Neighborhood diameter in map units|QgsProcessingParameterNumber.Double|0.1|False|0.0|None
 QgsProcessingParameterRasterDestination|output|Neighborhood