fix: append L suffix to timestamp filter for Exact API compatibility (#297)

The Exact API requires timestamp values to be suffixed with 'L' to
denote a long integer type in OData filter expressions.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tobiascadee

tap_exact/client.py

@@ -199,7 +199,7 @@ def get_url_params(self, context: dict | None, next_page_token: str) -> dict[str
         if self.select:
             params["$select"] = self.select
         starting_timestamp = self.get_starting_replication_key_value(context)
-        params["$filter"] = f"Timestamp gt {starting_timestamp if type(starting_timestamp) is int else 1}"
+        params["$filter"] = f"Timestamp gt {starting_timestamp if type(starting_timestamp) is int else 1}L"
         if next_page_token:
             params["$skiptoken"] = next_page_token
         return params