chore: Use 8 shards for main E2E tests (#26342)

* chore: Use 6 shards for main E2E tests

* Update .github/workflows/e2e.yml

.github/workflows/e2e.yml

@@ -74,7 +74,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        shard: [1, 2, 3, 4]
+        shard: [1, 2, 3, 4, 5, 6, 7, 8]
     steps:
       - uses: docker/login-action@v3
         with: