Update Python version matrix in third_party.yml

Removed Python 3.14 from the testing matrix due to failing tests and lack of support.

Author: JelleZijlstra

.github/workflows/third_party.yml

@@ -46,7 +46,8 @@ jobs:
         # PyPy is deliberately omitted here,
         # since pydantic's tests intermittently segfault on PyPy,
         # and it's nothing to do with typing_extensions
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        # Tests on 3.14 don't pass as of 18 October 2025
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
@@ -186,7 +187,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        # 3.9 is no longer supported. 3.14 fails some tests as of 18 October 2025
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
@@ -228,7 +230,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        # As of 18 October 2025, 3.14 fails a test
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
@@ -335,7 +338,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        # As of 18 October 2025 a dependency is missing 3.14 wheels
+        python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13" ]
     steps:
       - name: Install the latest version of uv
         uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e  # v6.8.0
@@ -392,6 +396,7 @@ jobs:
             || needs.mypy.result == 'failure'
             || needs.cattrs.result == 'failure'
             || needs.sqlalchemy.result == 'failure'
+            || needs.litestar.result == 'failure'
           )
         }}