Organize job matrix, avoid python 3.10 with scikit-learn 1.7

Author: PGijsbers

.github/workflows/test.yml

@@ -34,21 +34,27 @@ jobs:
         sklearn-only: ["true"]
 
         exclude:
-          # incompatible version combinations
+          # (python, sklearn) combinations for which there is no PyPI release
+          # scikit-learn 1.3
           - python-version: "3.13"
             scikit-learn: "1.3.*"
-          - python-version: "3.13"
-            scikit-learn: "1.4.*"
           - python-version: "3.14"
             scikit-learn: "1.3.*"
-          - python-version: "3.14"
+          # scikit-learn 1.4
+          - python-version: "3.13"
             scikit-learn: "1.4.*"
           - python-version: "3.14"
             scikit-learn: "1.4.*"
+          # scikit-learn 1.5
           - python-version: "3.14"
             scikit-learn: "1.5.*"
+          # scikit-learn 1.6
           - python-version: "3.14"
             scikit-learn: "1.6.*"
+          # scikit-learn 1.7 is installed with pandas 3
+          - python-version: "3.10"
+            scikit-learn: "1.7.*"
+
 
         include:
           # Full test run on ubuntu, 3.14