Add quotations to python version

Author: alejoe91

.github/workflows/io-test.yml

@@ -49,7 +49,7 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v3
         with:
           activate-environment: neo-test-env
-          python-version: ${{ matrix.python-version }}
+          python-version: "${{ matrix.python-version }}"
 
       - name: Get current dependencies hash
         id: dependencies
@@ -74,7 +74,6 @@ jobs:
         # restore-key hits should result in `cache-hit` == 'false'
         if: steps.cache-conda-env.outputs.cache-hit != 'true'
         run: |
-          conda install python=${{ matrix.python-version }} --yes
           conda env update --name neo-test-env --file environment_testing.yml --prune
 
       - name: Configure git