chore: scrape normalized_query_hash as string value instead of uint64…

… from system.query_log table (#320)

receiver/clickhousesystemtablesreceiver/query_log.go

@@ -56,7 +56,7 @@ type QueryLog struct {
  FormattedQuery string `ch:"formatted_query"`
  QueryKind string `ch:"query_kind"`
  // Identical hash value without the values of literals for similar queries.
- NormalizedQueryHash uint64 `ch:"normalized_query_hash"`
+ NormalizedQueryHash string `ch:"normalized_query_hash"`
 
  // Names of the databases present in the query.
  Databases []string `ch:"databases"`
@@ -224,7 +224,7 @@ func scrapeQueryLogTable(
  query,
  formatted_query,
  query_kind,
- normalized_query_hash,
+ toString(normalized_query_hash) as normalized_query_hash,
  databases,
  tables,
  columns,