Increase timeout for tests (near#11470)

When I run `cargo nextest run --cargo-profile dev-release` I often get
timeouts because some tests can run for more than 120 seconds:
```
        PASS [  45.690s] estimator-warehouse::bin/estimator-warehouse tests::test_full_estimator
        PASS [  48.150s] integration-tests tests::client::process_blocks::contract_precompilation_tests::test_two_deployments
        PASS [  40.543s] near-client tests::query_client::test_state_request
        PASS [  68.920s] integration-tests tests::client::sync_state_nodes::test_dump_epoch_missing_chunk_in_last_block
        PASS [ 131.637s] integration-tests tests::client::state_dump::test_state_sync_w_dumped_parts
```

This is annoying, when a test timeouts the test run is considered
"failed" and it spams the whole console with test logs.

Let's increase the timeout duration to 3s so that the tests don't
timeout.

.config/nextest.toml

@@ -1,5 +1,5 @@
 [profile.default]
-slow-timeout = { period = "60s", terminate-after = 2, grace-period = "0s" }
+slow-timeout = { period = "60s", terminate-after = 3, grace-period = "0s" }
 
 [[profile.default.overrides]]
 filter = 'test(test_full_estimator)'