ci: add dependabot and pytest workflow

.github/workflows/tests.yml

@@ -0,0 +1,28 @@
+name: Tests
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+    branches: ["**"]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: "pip"
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest pytest-asyncio
+
+      - name: Run tests
+        run: pytest
+        env:
+          SEED: ${{ secrets.SEED }}
+          API_KEY: ${{ secrets.API_KEY }}