Updating dependencies, but pinning back cryptography and marshmallow instead of fixing the API changes made there.

Author: russell-lewis

README.md

@@ -36,7 +36,7 @@ Cd to the bless repo:
 
 Create a virtualenv if you haven't already:
 
-    $ python3.7 -m venv venv
+    $ python3.8 -m venv venv
 
 Activate the venv:
 

requirements.txt

@@ -1,16 +1,30 @@
 -e .
-asn1crypto==0.24.0
-boto3==1.9.151
-botocore==1.12.151
-cffi==1.12.3
-cryptography==2.6.1
-docutils==0.14
-ipaddress==1.0.22
-jmespath==0.9.4
-kmsauth==0.3.0
+attrs==20.1.0
+boto3==1.14.47
+botocore==1.17.47
+cffi==1.14.2
+coverage==5.2.1
+cryptography==2.9.2
+docutils==0.15.2
+flake8==3.8.3
+iniconfig==1.0.1
+ipaddress==1.0.23
+jmespath==0.10.0
+kmsauth==0.6.0
 marshmallow==2.19.2
-pycparser==2.19
-python-dateutil==2.8.0
-s3transfer==0.2.0
-six==1.12.0
-urllib3==1.24.3
+mccabe==0.6.1
+more-itertools==8.4.0
+packaging==20.4
+pluggy==0.13.1
+py==1.9.0
+pycodestyle==2.6.0
+pycparser==2.20
+pyflakes==2.2.0
+pyparsing==2.4.7
+pytest==6.0.1
+pytest-mock==3.3.0
+python-dateutil==2.8.1
+s3transfer==0.3.3
+six==1.15.0
+toml==0.10.1
+urllib3==1.25.10