Ci python 38 (#1220)

* Install custom numpy version for specific combination of Python3.8 and numpy

* Debug output

* Change syntax

* move to coverage action v3

* Remove test output

Author: mfeurer

.github/workflows/test.yml

@@ -72,6 +72,11 @@ jobs:
     - name: Install scikit-learn ${{ matrix.scikit-learn }}
       run: |
         pip install scikit-learn==${{ matrix.scikit-learn }}
+    - name: Install numpy for Python 3.8
+      # Python 3.8 & scikit-learn<0.24 requires numpy<=1.23.5
+      if: ${{ matrix.python-version == '3.8' && contains(fromJSON('["0.23.1", "0.22.2", "0.21.2"]'), matrix.scikit-learn) }}
+      run: |
+        pip install numpy==1.23.5
     - name: Install scipy ${{ matrix.scipy }}
       if: ${{ matrix.scipy }}
       run: |
@@ -105,7 +110,7 @@ jobs:
         fi
     - name: Upload coverage
       if: matrix.code-cov && always()
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v3
       with:
         files: coverage.xml
         fail_ci_if_error: true