Bump uvicorn from 0.11.2 to 0.11.7 in /backend

backend/requirements.txt

@@ -4,22 +4,30 @@
 #
 #    pip-compile requirements.in
 #
+aiofiles==0.5.0           # via -r requirements.in
+certifi==2020.6.20        # via requests
+chardet==3.0.4            # via requests
 click==7.0                # via uvicorn
 dnspython==1.16.0         # via email-validator
-email-validator==1.0.5
-fastapi-contrib[mongo,pytz,ujson]==0.2.3
-fastapi==0.42.0
+email-validator==1.0.5    # via -r requirements.in
+fastapi-contrib[mongo,pytz,ujson]==0.2.3  # via -r requirements.in
+fastapi==0.42.0           # via -r requirements.in, fastapi-contrib
 h11==0.9.0                # via uvicorn
-httptools==0.0.13         # via uvicorn
-idna==2.8                 # via email-validator
-motor==2.1.0              # via fastapi-contrib
+httptools==0.1.1          # via uvicorn
+idna==2.8                 # via email-validator, requests
+lxml==4.5.2               # via python-cas
+motor==2.1.0              # via -r requirements.in, fastapi-contrib
 pydantic==0.32.2          # via fastapi
+pyjwt==1.7.1              # via -r requirements.in
 pymongo==3.10.1           # via motor
-python-multipart==0.0.5
+python-cas==1.5.0         # via -r requirements.in
+python-multipart==0.0.5   # via -r requirements.in
 pytz==2019.3              # via fastapi-contrib
-six==1.14.0               # via python-multipart
+requests==2.24.0          # via python-cas
+six==1.14.0               # via python-cas, python-multipart
 starlette==0.12.9         # via fastapi
-ujson==1.35
-uvicorn==0.11.2
+ujson==1.35               # via -r requirements.in, fastapi-contrib
+urllib3==1.25.10          # via requests
+uvicorn==0.11.7           # via -r requirements.in
 uvloop==0.14.0            # via uvicorn
 websockets==8.1           # via uvicorn