fix: leaktopus_backend/requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-CELERY-2314953
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3172287
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3314966
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315324
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315328
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315331
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315452
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315972
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3315975
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3316038
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-3316211
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5663682
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5777683
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813745
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813746
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5813750
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-5914629
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6036192
- https://snyk.io/vuln/SNYK-PYTHON-CRYPTOGRAPHY-6092044
- https://snyk.io/vuln/SNYK-PYTHON-SETUPTOOLS-3180412
- https://snyk.io/vuln/SNYK-PYTHON-WERKZEUG-3319935
- https://snyk.io/vuln/SNYK-PYTHON-WERKZEUG-3319936
- https://snyk.io/vuln/SNYK-PYTHON-WERKZEUG-6035177

leaktopus_backend/requirements.txt

@@ -2,7 +2,7 @@ jinja2<3.1.0
 Flask==1.1.2
 itsdangerous==2.0.1
 # Flask_Caching==1.9.0
-Werkzeug==1.0.1
+Werkzeug==2.3.8
 flask_debugtoolbar==0.11.0
 # flask_mail==0.9.1
 # flask_static_digest==0.2.1
@@ -20,15 +20,15 @@ loguru==0.6.0
 
 # Data and workers.
 redis==3.5.3
-celery==5.0.5
+celery==5.2.2
 
 # Tool specific libs.
 PyGithub>=1.55
 elasticsearch==7.17.4
 GitPython
 truffleHog==2.2.1
 pyjwt>=2.4.0 # not directly required, pinned to avoid a vulnerability
-cryptography==39
+cryptography==41.0.6
 
 # Documentation libs
 flasgger==0.9.5
@@ -41,3 +41,4 @@ pytest-cov==4.0.0
 
 requests_cache==0.9.8
 pytest-httpserver==1.0.0
+setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability