INCR-13 Unpin pygraphviz and run make upgrade

requirements/edx/base.in

@@ -117,7 +117,7 @@ PyContracts==1.7.1
 pycountry==1.20
 pycryptodomex==3.4.7
 pygments                            # Used to support colors in paver command output
-pygraphviz==1.1                     # No longer in use?  Optional dependency of networkx, from edx-sandbox/shared.in
+pygraphviz                          # No longer in use?  Optional dependency of networkx, from edx-sandbox/shared.in
 pyjwkest==1.3.2
 # TODO Replace PyJWT usage with pyjwkest
 PyJWT==1.5.2

requirements/edx/base.txt

@@ -191,7 +191,7 @@ pycountry==1.20
 pycparser==2.19
 pycryptodomex==3.4.7
 pygments==2.3.1
-pygraphviz==1.1
+pygraphviz==1.5
 pyjwkest==1.3.2
 pyjwt==1.5.2
 pymongo==2.9.1

requirements/edx/development.txt

@@ -251,7 +251,7 @@ pycryptodomex==3.4.7
 pydispatcher==2.0.5
 pyflakes==2.1.0
 pygments==2.3.1
-pygraphviz==1.1
+pygraphviz==1.5
 pyinotify==0.9.6
 pyjwkest==1.3.2
 pyjwt==1.5.2

requirements/edx/testing.txt

@@ -241,7 +241,7 @@ pycryptodomex==3.4.7
 pydispatcher==2.0.5       # via scrapy
 pyflakes==2.1.0           # via flake8
 pygments==2.3.1
-pygraphviz==1.1
+pygraphviz==1.5
 pyjwkest==1.3.2
 pyjwt==1.5.2
 pylint-celery==0.3        # via edx-lint