fix: gpt4all-training/requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6091621
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6091622
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6209406
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6209407
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6645291
- https://snyk.io/vuln/SNYK-PYTHON-AIOHTTP-6808823
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321964
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321966
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321970
- https://snyk.io/vuln/SNYK-PYTHON-TRANSFORMERS-6134594
- https://snyk.io/vuln/SNYK-PYTHON-TRANSFORMERS-6135747
- https://snyk.io/vuln/SNYK-PYTHON-TRANSFORMERS-6220003
- https://snyk.io/vuln/SNYK-PYTHON-TRANSFORMERS-6239525