cleanup test matrix; scale it down to 2x Python 2x OS, 2x OM

Author: syntron

.github/workflows/Test.yml

@@ -15,18 +15,15 @@ jobs:
     strategy:
       matrix:
         # test for:
-        # * Python 3.10 - oldest supported version
-        # * Python 3.12 - changes in OMCSession / OMCPath
-        # * Python 3.14 - latest Python version
-        python-version: ['3.10', '3.12', '3.14']
+        # * oldest supported version
+        # * latest available Python version
+        python-version: ['3.10', '3.14']
         # * Linux using ubuntu-latest
         # * Windows using windows-latest
         os: ['ubuntu-latest', 'windows-latest']
-        # * OM 1.25.0 - before changing definition of simulation overrides
         # * OM stable - latest stable version
         # * OM nightly - latest nightly build
-        omc-version: ['1.25.0', 'stable', 'nightly']
-        # => total of 3 (Python) * 2 (OS) * 3 (OM) = 19 runs for each test
+        omc-version: ['stable', 'nightly']
 
     steps:
       - uses: actions/checkout@v6