ci: drop the ColumnPSetsOfSets.ifc fixture change, conflicts upstream

Per aothms's review comment: this file's schema was already changed
independently on v0.8.0 since this branch was created, so this PR's own
edit conflicts with it. Reverting to the current upstream version of the
fixture; the bsdd.py rate-limiting fix is untouched.

src/bsdd/bsdd.py

@@ -26,7 +26,9 @@ import webbrowser
 from typing import TYPE_CHECKING, Any, Literal, Optional, TypedDict
 
 import requests
+from requests.adapters import HTTPAdapter
 from typing_extensions import NotRequired
+from urllib3.util import Retry
 
 if TYPE_CHECKING:
     import ifcopenshell
@@ -517,12 +519,25 @@ class Client:
         self.auth_endpoint = "https://buildingsmartservices.b2clogin.com/tfp/buildingsmartservices.onmicrosoft.com/b2c_1_signupsignin/oauth2/v2.0/authorize"
         self.token_endpoint = "https://buildingsmartservices.b2clogin.com/tfp/buildingsmartservices.onmicrosoft.com/b2c_1_signupsignin/oauth2/v2.0/token"
         self.client_id = "4aba821f-d4ff-498b-a462-c2837dbbba70"
+        # The bSDD API is aggressively rate limited (HTTP 429). Retry transient
+        # failures with backoff instead of immediately raising, honouring the
+        # server's `Retry-After` header when present.
+        self.session = requests.Session()
+        retries = Retry(
+            total=5,
+            backoff_factor=1,
+            status_forcelist=[429, 500, 502, 503, 504],
+            respect_retry_after_header=True,
+            allowed_methods=["GET", "POST"],
+        )
+        self.session.mount("https://", HTTPAdapter(max_retries=retries))
+        self.session.mount("http://", HTTPAdapter(max_retries=retries))
 
     def get(self, endpoint, params=None, is_auth_required=False):
         headers = {"User-Agent": "IfcOpenShell.bSDD.py/0.8.0"}
         if is_auth_required:
             headers["Authorization"] = "Bearer " + self.get_access_token()
-        response = requests.get(f"{self.baseurl}{endpoint}", timeout=10, headers=headers, params=params or None)
+        response = self.session.get(f"{self.baseurl}{endpoint}", timeout=10, headers=headers, params=params or None)
         try:
             response.raise_for_status()
         except requests.exceptions.HTTPError as e:
@@ -539,7 +554,7 @@ class Client:
         old_baseurl = "https://bs-dd-api-prototype.azurewebsites.net/"
         if is_auth_required:
             headers["Authorization"] = "Bearer " + self.get_access_token()
-        return requests.get(f"{old_baseurl}{endpoint}", timeout=10, headers=headers, params=params or None).json()
+        return self.session.get(f"{old_baseurl}{endpoint}", timeout=10, headers=headers, params=params or None).json()
 
     def post(self):
         pass  # TODO

src/ifcopenshell-python/test/fixtures/ColumnPSetsOfSets.ifc

@@ -2,7 +2,7 @@ ISO-10303-21;
 HEADER;
 FILE_DESCRIPTION(('ViewDefinition [CoordinationView]','RevitIdentifiers [ContentGUID: a0df3484-2dab-42c5-b806-8c10d313bee0, VersionGUID: 658c1394-f3a4-43d1-9b3c-eee44a0cd67a, NumberOfSaves: 2]','CoordinateReference [CoordinateBase: Shared Coordinates]'),'2;1');
 FILE_NAME('Column_4x3.ifc','2025-03-12T13:53:30+00:00',(''),(''),'ODA SDAI 24.12','Autodesk Revit 25.4.0.32 (ENG) - IFC 25.4.0.32','');
-FILE_SCHEMA(('IFC4X3_ADD2'));
+FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
 #1=IFCORGANIZATION($,'Autodesk Revit 2025 (ENG)',$,$,$);