Bump pyyaml from 5.1.2 to 5.4 in /legacy-api/src

legacy-api/src/requirements.txt

@@ -4,21 +4,46 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-alembic==1.0.11           # via flask-migrate
-click==7.0                # via flask
+alembic==1.0.11
+    # via flask-migrate
+click==7.0
+    # via flask
 flask-migrate==2.5.2
-flask-sqlalchemy==2.4.0   # via flask-migrate
+    # via -r requirements.in
+flask-sqlalchemy==2.4.0
+    # via flask-migrate
 flask-swagger-ui==3.20.9
-flask==1.1.1              # via flask-migrate, flask-sqlalchemy, flask-swagger-ui
-itsdangerous==1.1.0       # via flask
-jinja2==2.10.1            # via flask
-mako==1.0.13              # via alembic
-markupsafe==1.1.1         # via jinja2, mako
+    # via -r requirements.in
+flask==1.1.1
+    # via
+    #   flask-migrate
+    #   flask-sqlalchemy
+    #   flask-swagger-ui
+itsdangerous==1.1.0
+    # via flask
+jinja2==2.10.1
+    # via flask
+mako==1.0.13
+    # via alembic
+markupsafe==1.1.1
+    # via
+    #   jinja2
+    #   mako
 psycopg2==2.8.3
-python-dateutil==2.8.0    # via alembic
-python-editor==1.0.4      # via alembic
-pyyaml==5.1.2
+    # via -r requirements.in
+python-dateutil==2.8.0
+    # via alembic
+python-editor==1.0.4
+    # via alembic
+pyyaml==5.4
+    # via -r requirements.in
 simplejson==3.16.0
-six==1.12.0               # via python-dateutil
-sqlalchemy==1.3.5         # via alembic, flask-sqlalchemy
-werkzeug==0.15.4          # via flask
+    # via -r requirements.in
+six==1.12.0
+    # via python-dateutil
+sqlalchemy==1.3.5
+    # via
+    #   alembic
+    #   flask-sqlalchemy
+werkzeug==0.15.4
+    # via flask