upgrades webserver's pylint

Author: pcrespov

services/web/server/requirements/_base.txt

@@ -38,7 +38,7 @@ json2html==1.3.0          # via -r requirements/_base.in
 jsondiff==1.2.0           # via -r requirements/_base.in
 jsonschema==3.2.0         # via -r requirements/../../../../packages/service-library/requirements/_base.in, openapi-spec-validator
 kombu==4.6.8              # via celery
-lazy-object-proxy==1.4.3  # via openapi-core
+lazy-object-proxy==1.4.3  # via -r requirements/../../../../packages/service-library/requirements/_base.in, openapi-core
 markupsafe==1.1.1         # via jinja2
 multidict==4.7.6          # via aiohttp, yarl
 openapi-core==0.12.0      # via -r requirements/../../../../packages/service-library/requirements/_base.in

services/web/server/requirements/_test.in

@@ -30,7 +30,7 @@ docker
 redis
 
 # tools
-pylint==2.5.0 # 2.5.2 fails to run in parallel. SEE https://github.com/PyCQA/pylint/releases for updates
+pylint
 coveralls
 codecov
 ptvsd

services/web/server/requirements/_test.txt

@@ -64,7 +64,7 @@ psycopg2-binary==2.8.5    # via -r requirements/_base.txt, aiopg, sqlalchemy
 ptvsd==4.3.2              # via -r requirements/_test.in
 py==1.8.1                 # via pytest
 pycparser==2.20           # via -r requirements/_base.txt, cffi
-pylint==2.5.0             # via -r requirements/_test.in
+pylint==2.5.3             # via -r requirements/_test.in
 pyparsing==2.4.7          # via packaging
 pyrsistent==0.16.0        # via -r requirements/_base.txt, jsonschema
 pytest-aiohttp==0.3.0     # via -r requirements/_test.in