Update pypi package versions (requirements.txt)

tildes/requirements.txt

@@ -27,7 +27,7 @@ ipython-genutils==0.2.0
 isort==4.3.18
 jedi==0.13.3
 Jinja2==2.10.1
-lazy-object-proxy==1.3.1
+lazy-object-proxy==1.4.0
 Mako==1.0.9
 MarkupSafe==1.1.1
 marshmallow==2.19.2
@@ -43,7 +43,7 @@ pickleshare==0.7.5
 Pillow==6.0.0
 plaster==1.0
 plaster-pastedeploy==0.7
-pluggy==0.9.0
+pluggy==0.11.0
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
 prospector==1.1.6.2
@@ -55,7 +55,7 @@ pycodestyle==2.4.0
 pycparser==2.19
 pydocstyle==3.0.0
 pyflakes==1.6.0
-Pygments==2.3.1
+Pygments==2.4.0
 pylint==2.1.1
 pylint-celery==0.3
 pylint-django==2.0.2
@@ -70,7 +70,7 @@ pyramid-mako==1.0.2
 pyramid-session-redis==1.5.0
 pyramid-tm==2.2.1
 pyramid-webassets==0.10
-pytest==4.4.1
+pytest==4.4.2
 pytest-mock==1.10.4
 python-dateutil==2.8.0
 python-editor==1.0.4