fix(ci): use bunx vitest for node:sqlite tests step (hoisted vitest)

Author: Shaw

.github/workflows/test.yml

@@ -99,8 +99,7 @@ jobs:
         # minimal config that doesn't have the exclude.
         working-directory: packages/app-core
         run: |
-          node node_modules/vitest/vitest.mjs run \
-            --config vitest.node-sqlite.config.ts
+          bunx vitest run --config vitest.node-sqlite.config.ts
 
   client-tests:
     name: Client Tests