Add translators from CAP to dict

Other systems we’re working with won’t easily be adapted to emit JSON
instead of CAP, so it’s less work for us to do that conversion.

This commit adds to code to parse the XML and turn it into a dict that
we can work with, including converting the polygon string into native
Python lists.

requirements.txt

@@ -25,6 +25,7 @@ SQLAlchemy==1.3.22
 strict-rfc3339==0.7
 rfc3987==1.3.8
 cachetools==4.2.0
+beautifulsoup4==4.9.3
 
 notifications-python-client==5.7.1
 
@@ -42,14 +43,14 @@ alembic==1.4.3
 amqp==1.4.9
 anyjson==0.3.3
 attrs==20.3.0
-awscli==1.18.206
+awscli==1.18.215
 bcrypt==3.2.0
 billiard==3.3.0.23
 bleach==3.2.1
 blinker==1.4
 boto==2.49.0
-boto3==1.16.46
-botocore==1.19.46
+boto3==1.16.55
+botocore==1.19.55
 certifi==2020.12.5
 chardet==4.0.0
 click==7.1.2
@@ -60,19 +61,19 @@ flask-redis==0.4.0
 future==0.18.2
 geojson==2.5.0
 govuk-bank-holidays==0.8
-greenlet==0.4.17
+greenlet==1.0.0
 idna==2.10
-importlib-metadata==3.3.0
+importlib-metadata==3.4.0
 Jinja2==2.11.2
 jmespath==0.10.0
 kombu==3.0.37
-Mako==1.1.3
+Mako==1.1.4
 MarkupSafe==1.1.1
 mistune==0.8.4
 monotonic==1.5
 orderedset==2.0.3
 packaging==20.8
-phonenumbers==8.12.15
+phonenumbers==8.12.16
 pyasn1==0.4.8
 pycparser==2.20
 pyparsing==2.4.7
@@ -86,9 +87,10 @@ PyYAML==5.3.1
 redis==3.5.3
 requests==2.25.1
 rsa==4.5
-s3transfer==0.3.3
+s3transfer==0.3.4
 six==1.15.0
 smartypants==2.0.1
+soupsieve==2.1
 statsd==3.3.0
 typing-extensions==3.7.4.3
 urllib3==1.26.2