Invalid URI: The Uri string is too long

- Algolia Client Version: 6.2.0

When a quite long string is put to Filters property of Query object, it throws `Invalid URI: The Uri string is too long` exception during serialization. Here is a stack trace:
```System.UriFormatException: Invalid URI: The Uri string is too long.
at System.UriHelper.EscapeString(String input, Int32 start, Int32 end, Char[] dest, Int32& destPos, Boolean isUriString, Char force1, Char force2, Char rsvd)
at System.Uri.EscapeDataString(String stringToEscape)
at Algolia.Search.Utils.QueryStringHelper.<>c__DisplayClass1_0`1.b__1(PropertyInfo p)
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Collections.Generic.LargeArrayBuilder`1.AddRange(IEnumerable`1 items)
at System.Collections.Generic.SparseArrayBuilder`1.AddRange(IEnumerable`1 items)
at System.Collections.Generic.SparseArrayBuilder`1.ReserveOrAdd(IEnumerable`1 items)
at System.Linq.Enumerable.ConcatNIterator`1.LazyToArray()
at System.Linq.Enumerable.ConcatNIterator`1.ToArray()
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Algolia.Search.Utils.QueryStringHelper.ToQueryString[T](T value, String[] ignoreList)
at Algolia.Search.Serializer.QueryConverter.WriteJson(JsonWriter writer, Object value, JsonSerializer serializer)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeConvertable(JsonWriter writer, JsonConverter converter, Object value, JsonContract contract, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
at Algolia.Search.Serializer.SerializerHelper.Serialize[T](T data, Stream stream, JsonSerializerSettings settings)
at Algolia.Search.Transport.HttpTransport.CreateRequestContent[T](T data)
at Algolia.Search.Transport.HttpTransport.ExecuteRequestAsync[TResult,TData](HttpMethod method, String uri, CallType callType, TData data, RequestOptions requestOptions, CancellationToken ct)
at Algolia.Search.Clients.SearchClient.MultipleQueriesAsync[T](MultipleQueriesRequest request, RequestOptions requestOptions, CancellationToken ct)```

The usage of Uri.EscapeDataString in this method
https://github.com/algolia/algoliasearch-client-csharp/blob/5e79898740de9c31f0bff7199a6d00cd1079c04d/src/Algolia.Search/Utils/QueryStringHelper.cs#L81 causes the issue since it has some limitations of its length.