fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-1066259
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-1076802
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-1090612
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-1279042
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-1290072
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2312875
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2329158
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2329159
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2329160
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2389002
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2389021
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2606966
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2606969
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2940618
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-2968205
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-3319450
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-5496950
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-5750790
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-5880505
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-5932095
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-6041515
- https://dev.snyk.io/vuln/SNYK-PYTHON-DJANGO-6370660
- https://dev.snyk.io/vuln/SNYK-PYTHON-SQLPARSE-1584201
- https://dev.snyk.io/vuln/SNYK-PYTHON-SQLPARSE-5426157

requirements.txt

@@ -1,7 +1,7 @@
 asgiref==3.2.10
-Django==3.0.10
+Django==3.2.25
 pytz==2020.1
-sqlparse==0.3.1 
+sqlparse==0.4.4 
 php-wsgi
 pyyaml==5.4
 django-crispy-forms