Use jsonschema[format] instead of jsonschema

`jsonschema[format]` includes all the formatting dependencies of
jsonschema, meaning that we don't have to specify `rfc3339-validator`
and `rfc3987` ourselves in the requirements.in file. This also has the
benefit of meaning that if the underlying formatting packages of
jsonschema change, we will be covered and won't accidentally miss the
fact that we need to change a package.

requirements.in

@@ -13,14 +13,12 @@ click-datetime==0.2
 git+https://github.com/benoitc/gunicorn.git@1299ea9e967a61ae2edebe191082fd169b864c64#egg=gunicorn[eventlet]==20.1.0
 iso8601==1.0.2
 itsdangerous==2.1.2
-jsonschema==4.4.0
+jsonschema[format]==4.4.0
 marshmallow-sqlalchemy==0.23.1 # pyup: <0.24.0 # marshmallow v3 throws errors
 marshmallow==2.21.0 # pyup: <3 # v3 throws errors
 psycopg2-binary==2.9.3
 PyJWT==2.3.0
 SQLAlchemy==1.4.35
-rfc3339-validator==0.1.4
-rfc3987==1.3.8
 cachetools==5.0.0
 beautifulsoup4==4.10.0
 lxml==4.8.0

requirements.txt

@@ -8,6 +8,8 @@ alembic==1.7.4
     # via flask-migrate
 amqp==5.0.9
     # via kombu
+arrow==1.2.2
+    # via isoduration
 attrs==21.2.0
     # via jsonschema
 awscli==1.21.4
@@ -94,6 +96,8 @@ flask-sqlalchemy @ git+https://github.com/mitsuhiko/flask-sqlalchemy.git@500e732
     # via
     #   -r requirements.in
     #   flask-migrate
+fqdn==1.5.1
+    # via jsonschema
 gds-metrics==0.2.4
     # via -r requirements.in
 geojson==2.5.0
@@ -105,11 +109,15 @@ greenlet==1.1.2
 gunicorn @ git+https://github.com/benoitc/gunicorn.git@1299ea9e967a61ae2edebe191082fd169b864c64
     # via -r requirements.in
 idna==3.3
-    # via requests
+    # via
+    #   jsonschema
+    #   requests
 importlib-metadata==4.11.3
     # via flask
 iso8601==1.0.2
     # via -r requirements.in
+isoduration==20.11.0
+    # via jsonschema
 itsdangerous==2.1.2
     # via
     #   -r requirements.in
@@ -123,7 +131,9 @@ jmespath==0.10.0
     # via
     #   boto3
     #   botocore
-jsonschema==4.4.0
+jsonpointer==2.3
+    # via jsonschema
+jsonschema[format]==4.4.0
     # via -r requirements.in
 kombu==5.2.3
     # via celery
@@ -180,6 +190,7 @@ pyrsistent==0.18.0
     # via jsonschema
 python-dateutil==2.8.2
     # via
+    #   arrow
     #   awscli-cwlogs
     #   botocore
 python-json-logger==2.0.2
@@ -201,9 +212,9 @@ requests==2.26.0
     #   notifications-python-client
     #   notifications-utils
 rfc3339-validator==0.1.4
-    # via -r requirements.in
+    # via jsonschema
 rfc3987==1.3.8
-    # via -r requirements.in
+    # via jsonschema
 rsa==4.7.2
     # via awscli
 s3transfer==0.5.0
@@ -233,6 +244,8 @@ sqlalchemy==1.4.35
     #   marshmallow-sqlalchemy
 statsd==3.3.0
     # via notifications-utils
+uri-template==1.2.0
+    # via jsonschema
 urllib3==1.26.7
     # via
     #   botocore
@@ -244,6 +257,8 @@ vine==5.0.0
     #   kombu
 wcwidth==0.2.5
     # via prompt-toolkit
+webcolors==1.11.1
+    # via jsonschema
 webencodings==0.5.1
     # via bleach
 werkzeug==2.0.3