CI - skip Pytest Windows with Python 3.14

The test passes but is very slow with workflow duration increased
from 10 to 27 minutes (extra time spent on building from sources).

Related to #7832

Author: pavoljuhas

.github/workflows/ci.yml

@@ -290,7 +290,9 @@ jobs:
     name: Pytest Windows
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13', '3.14']
+        # TODO: #7832 - enable '3.14' once grpcio-tools, qiskit-aer, stim have binary wheels.
+        # Installation from sources works, but with run duration increased from 6 to 27 minutes.
+        python-version: ['3.11', '3.12', '3.13']
     runs-on: windows-2022-x64-8-core
     steps:
       - name: Check out source repository