[Snyk] Fix for 44 vulnerabilities

requirements.txt

@@ -15,30 +15,30 @@ decorator==4.0.11         # via ipython, networkx, traitlets
 dj-database-url==0.4.1
 django-click==1.2.0
 django-rq==0.9.1
-django==1.11
-djangorestframework==3.4
+django==3.2.15
+djangorestframework==3.11.2
 gitdb==0.6.4              # via gitpython
-gitpython==2.0.2
+gitpython==3.1.27
 humanfriendly==2.4        # via coloredlogs
 inflection==0.3.1
 ipdb==0.10.0
 ipython-genutils==0.2.0   # via traitlets
-ipython==5.3.0            # via ipdb
+ipython==7.16.3            # via ipdb
 jedi==0.10.2              # via ipython
 json-delta==2.0
-lxml==3.6.0
-networkx==1.11
+lxml==4.9.1
+networkx==2.6
 pbr==3.0.0                # via stevedore
 pexpect==4.2.1            # via ipython
 pickleshare==0.7.4        # via ipython
 prompt-toolkit==1.0.14    # via ipython
 ptyprocess==0.5.1         # via pexpect
-pygments==2.2.0           # via ipython
+pygments==2.7.4           # via ipython
 pyparsing==2.1.4
 pytz==2017.2              # via django
 redis==2.10.5             # via rq
-requests-cache==0.4.12
-requests==2.10.0
+requests-cache==0.6.0.dev1
+requests==2.20
 roman==2.0.0
 rq==0.7.1                 # via django-rq
 simplegeneric==0.8.1      # via ipython