Update test matrix (#403)

* update test matrix

python-version: ['3.10', '3.12', '3.14']
os: ['ubuntu-latest', 'windows-latest']
omc-version: ['1.25.0', 'stable', 'nightly']

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

---------

Co-authored-by: Adeel Asghar <adeel.asghar@liu.se>

Author: syntron

.github/workflows/Test.yml

@@ -14,8 +14,15 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        python-version: ['3.10', '3.12', '3.13']
+        # test for:
+        # * 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 stable - latest stable version
+        # * OM nightly - latest nightly build
         omc-version: ['stable', 'nightly']
 
     steps: