fix: requirements.txt to reduce vulnerabilities
fix: requirements.txt to reduce vulnerabilities


The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-PYYAML-590151
StrellaGroup/frappe,saurabh6790/frappe,yashodhank/frappe,mhbu50/frappe,almeidapaulopt/frappe,saurabh6790/frappe,mhbu50/frappe,saurabh6790/frappe,saurabh6790/frappe,StrellaGroup/frappe,almeidapaulopt/frappe,frappe/frappe,mhbu50/frappe,almeidapaulopt/frappe,yashodhank/frappe,mhbu50/frappe,StrellaGroup/frappe,yashodhank/frappe,almeidapaulopt/frappe,frappe/frappe,yashodhank/frappe,frappe/frappe