ci: add cache test

.github/workflows/test.yml

@@ -92,3 +92,16 @@ jobs:
         uses: ./.github/actions/compare-bun-version
         with:
           bun-version: "1.1.0"
+
+  setup-bun-cache-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: ./
+        id: setup_bun
+
+      - name: Install dependencies
+        run: bun add merino