refactor: updated github action to use secrets

Signed-off-by: rohansen856 <rohansen856@gmail.com>

Author: rohansen856

.github/workflows/test.yml

@@ -98,6 +98,8 @@ jobs:
       run: python -m pip list
     - name: Run tests on Ubuntu Test
       if: matrix.os == 'ubuntu-latest'
+      env:
+        OPENML_TEST_SERVER_ADMIN_KEY: ${{ secrets.OPENML_TEST_SERVER_ADMIN_KEY }}
       run: |
         if [ ${{ matrix.code-cov }} ]; then codecov='--cov=openml --long  --cov-report=xml'; fi
         # Most of the time, running only the scikit-learn tests is sufficient
@@ -106,6 +108,8 @@ jobs:
         pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
     - name: Run tests on Ubuntu Production
       if: matrix.os == 'ubuntu-latest'
+      env:
+        OPENML_TEST_SERVER_ADMIN_KEY: ${{ secrets.OPENML_TEST_SERVER_ADMIN_KEY }}
       run: |
         if [ ${{ matrix.code-cov }} ]; then codecov='--cov=openml --long  --cov-report=xml'; fi
         # Most of the time, running only the scikit-learn tests is sufficient
@@ -114,6 +118,8 @@ jobs:
         pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
     - name: Run tests on Windows
       if: matrix.os == 'windows-latest'
+      env:
+        OPENML_TEST_SERVER_ADMIN_KEY: ${{ secrets.OPENML_TEST_SERVER_ADMIN_KEY }}
       run: |  # we need a separate step because of the bash-specific if-statement in the previous one.
         pytest -n 4 --durations=20 --dist load -sv --reruns 5 --reruns-delay 1
     - name: Check for files left behind by test