test: use latest v5, log output on failure

Author: pieh

plugin/test/fixtures/v5/with-adapters/e2e-tests/build.test.js

@@ -13,6 +13,10 @@ describe('A site using gatsby version with adapters', () => {
     // in CI warnings are outputted to stderr (yikes)
     const fullOutput = stdout + stderr
 
+    if (!success) {
+      console.error(fullOutput)
+    }
+
     expect(success).toBeTruthy()
 
     expect(fullOutput).toContain(

plugin/test/fixtures/v5/with-adapters/package.json

@@ -20,7 +20,7 @@
     "test:jest": "jest functions.test.js"
   },
   "dependencies": {
-    "gatsby": "5.12.5",
+    "gatsby": "5.14.1",
     "gatsby-plugin-netlify": "5.1.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"