pin windows builder to 3.13.3 (#13070)

3.13.4 accidentally made the regular builds free-threading

Author: alex

.github/workflows/ci.yml

@@ -349,7 +349,7 @@ jobs:
           - {ARCH: 'x64', WINDOWS: 'win64'}
         PYTHON:
           - {VERSION: "3.8", NOXSESSION: "tests-nocoverage"}
-          - {VERSION: "3.13", NOXSESSION: "tests"}
+          - {VERSION: "3.13.3", NOXSESSION: "tests"}
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2