ci: Update Python version to 3.7
diff --git a/.github/workflows/server-tests.yml b/.github/workflows/server-tests.yml
index 6f831ac..92685e2 100644
--- a/.github/workflows/server-tests.yml
+++ b/.github/workflows/server-tests.yml
@@ -30,7 +30,7 @@
       - name: Setup Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.6
+          python-version: 3.7
 
       - name: Add to Hosts
         run: echo "127.0.0.1 test_site" | sudo tee -a /etc/hosts