Add explicit true to old sklearn tests

PGijsbers · PGijsbers · commit b9b8c95ffb26 · 2023-02-22T12:08:26.000+01:00
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -20,12 +20,15 @@ jobs:
             scikit-learn: 0.18.2
             scipy: 1.2.0
             os: ubuntu-latest
+            sklearn-only: 'true'
           - python-version: 3.6
             scikit-learn: 0.19.2
             os: ubuntu-latest
+            sklearn-only: 'true'
           - python-version: 3.6
             scikit-learn: 0.20.2
             os: ubuntu-latest
+            sklearn-only: 'true'
           - python-version: 3.8
             scikit-learn: 0.23.1
             code-cov: true
