tests: start MongoDB 5 with GitHub Actions

This uses MongoDB 5, because later versions fail with
"OperationFailure: Unsupported OP_QUERY command"

https://www.mongodb.com/docs/v6.0/release-notes/6.0-compatibility/#legacy-opcodes-removed

Author: abitrolly

.github/workflows/python-app.yml

@@ -33,6 +33,11 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
+    - name: Spin up MongoDB for running tests
+      uses: supercharge/[email protected]
+      with:
+        mongodb-version: "5"
+    - name: Run nosetests
       run: |
-        pytest
+        mongorestore dump/explainshell && mongorestore -d explainshell_tests dump/explainshell
+        make tests