[Core] Update changelog for release (#45114)

- Removed parameterization for a test.

Signed-off-by: Paul Van Eck <paulvaneck@microsoft.com>

Author: pvaneck

sdk/core/azure-core/CHANGELOG.md

@@ -1,16 +1,10 @@
 # Release History
 
-## 1.38.1 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.38.1 (2026-02-10)
 
 ### Bugs Fixed
 
-- Fixed PipelineClient.format_url to avoid adding trailing slashes when the URL template contains only query parameters.
-
-### Other Changes
+- Fixed `PipelineClient.format_url` to avoid adding trailing slashes when the URL template contains only query parameters.  #45044
 
 ## 1.38.0 (2026-01-12)
 

sdk/core/azure-core/tests/test_basic_transport.py

@@ -126,8 +126,7 @@ def test_http_request_serialization(http_request):
     assert serialized == expected
 
 
-@pytest.mark.parametrize("http_request", HTTP_REQUESTS)
-def test_url_join(http_request):
+def test_url_join():
     assert _urljoin("devstoreaccount1", "?testdir") == "devstoreaccount1?testdir"
     assert _urljoin("devstoreaccount1", "") == "devstoreaccount1"
     assert _urljoin("devstoreaccount1", "testdir/") == "devstoreaccount1/testdir/"