[Snyk] Fix for 23 vulnerabilities (#2002)

* fix: requirements.txt to reduce vulnerabilities


The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CERTIFI-3164749
- https://snyk.io/vuln/SNYK-PYTHON-CERTIFI-5805047
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-1066259
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-1279042
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-1290072
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-1298665
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2312875
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2329158
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2329159
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2329160
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2389002
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2389021
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2606966
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2606969
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2940618
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-2968205
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-3319450
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-5496950
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-5750790
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-5880505
- https://snyk.io/vuln/SNYK-PYTHON-DJANGO-5932095
- https://snyk.io/vuln/SNYK-PYTHON-REQUESTS-5595532
- https://snyk.io/vuln/SNYK-PYTHON-WHEEL-3180413

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: snyk-bot <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

requirements.txt

@@ -3,6 +3,7 @@ ahocorasick-rs==0.17.1
 argon2-cffi==23.1.0
 borgbackup==1.2.6
 celery==5.3.4
+certifi>=2023.7.22 # not directly required, pinned by Snyk to avoid a vulnerability
 # For Argon2 and misaka
 cffi==1.16.0
 # For Azure Tenant auth
@@ -45,6 +46,7 @@ pyuca==1.2
 rapidfuzz==3.3.1
 raven
 redis==4.6.0
+requests>=2.31.0 # not directly required, pinned by Snyk to avoid a vulnerability
 rollbar==0.16.3
 ruamel.yaml==0.17.35
 sentry-sdk==1.31.0