ci: increase tracer suite parallelism to 14 (#15329)

## Description

We have 14 venvs, but only use 9 jobs, so some jobs are running multiple
venvs, moving it to be 1:1 venv to job will help with runtime and avoid
timeouts.

## Testing

<!-- Describe your testing strategy or note what tests are included -->

## Risks

<!-- Note any risks associated with this change, or "None" if no risks
-->

## Additional Notes

<!-- Any other information that would be helpful for reviewers -->

Author: brettlangdon

tests/suitespec.yml

@@ -254,7 +254,7 @@ suites:
       DD_TRACE_AGENT_URL: http://localhost:8126
       KUBERNETES_MEMORY_REQUEST: "4Gi"
       KUBERNETES_MEMORY_LIMIT: "4Gi"
-    parallelism: 9
+    parallelism: 14
     paths:
       - '@tracing'
       - '@bootstrap'