Update deps to fix tests on latest python

Signed-off-by: Shivam Sandbhor <shivam.sandbhor@gmail.com>

Author: sbs2001

requirements.txt

@@ -33,7 +33,7 @@ ptyprocess==0.6.0
 py==1.8.0
 pycodestyle==2.5.0
 pycparser==2.20
-pygit2==1.2.0
+pygit2==1.5.0
 Pygments==2.6.1
 pyparsing==2.4.5
 pytest==5.3.2
@@ -43,7 +43,7 @@ pytest-django==3.7.0
 pytest-mock==1.13.0
 python-dateutil==2.8.1
 pytz==2019.3
-schema==0.7.1
+schema==0.7.4
 six==1.13.0
 soupsieve==1.9.5
 sqlparse==0.3.0