Update python requirements

requirements/edx/development.txt

@@ -55,6 +55,7 @@ argh==0.26.2
 argparse==1.4.0
 asn1crypto==0.24.0
 astroid==1.5.2
+atomicwrites==1.1.5
 attrs==17.4.0
 babel==1.3
 backports.functools-lru-cache==1.5
@@ -63,7 +64,7 @@ beautifulsoup==3.2.1
 before-after==1.0.1
 billiard==3.3.0.23
 bleach==1.4
-bok-choy==0.7.2
+bok-choy==0.7.3
 boto3==1.4.8
 boto==2.39.0
 botocore==1.8.17
@@ -271,7 +272,7 @@ pytest-django==3.1.2
 pytest-forked==0.2
 pytest-randomly==1.2.3
 pytest-xdist==1.22.2
-pytest==3.5.1
+pytest==3.6.0
 python-dateutil==2.4.0
 python-levenshtein==0.12.0
 python-memcached==1.48

requirements/edx/testing.txt

@@ -52,6 +52,7 @@ argh==0.26.2
 argparse==1.4.0
 asn1crypto==0.24.0
 astroid==1.5.2            # via edx-lint, pylint, pylint-celery, pylint-plugin-utils
+atomicwrites==1.1.5       # via pytest
 attrs==17.4.0
 babel==1.3
 backports.functools-lru-cache==1.5  # via astroid, pylint
@@ -60,7 +61,7 @@ beautifulsoup==3.2.1
 before-after==1.0.1
 billiard==3.3.0.23
 bleach==1.4
-bok-choy==0.7.2
+bok-choy==0.7.3
 boto3==1.4.8
 boto==2.39.0
 botocore==1.8.17
@@ -260,7 +261,7 @@ pytest-django==3.1.2
 pytest-forked==0.2        # via pytest-xdist
 pytest-randomly==1.2.3
 pytest-xdist==1.22.2
-pytest==3.5.1
+pytest==3.6.0
 python-dateutil==2.4.0
 python-levenshtein==0.12.0
 python-memcached==1.48