[requires.io] dependency update on master branch (#139)

Author: glyph

tox.ini

@@ -10,7 +10,7 @@ python =
 
 [testenv]
 deps =
-    pytest==5.2.2
+    pytest==5.4.1
     pytest-cov==2.8.1
 commands =
     pytest --cov=wsproto {posargs}
@@ -47,7 +47,7 @@ commands = prospector
 
 [testenv:docs]
 basepython = python3.8
-deps = sphinx==2.2.1
+deps = sphinx==3.0.3
 whitelist_externals = make
 changedir = {toxinidir}/docs
 commands =
@@ -57,9 +57,9 @@ commands =
 [testenv:packaging]
 basepython=python3.8
 deps =
-   check-manifest==0.40
-   readme-renderer==24.0
-   twine==2.0.0
+   check-manifest==0.41
+   readme-renderer==26.0
+   twine==3.1.1
 commands =
    check-manifest
    python setup.py check --metadata --strict