Update requirements

requirements.in

@@ -0,0 +1,5 @@
+Flask
+Flask-Cors
+Flask-SQLAlchemy
+psycopg2-binary
+pip-tools

requirements.txt

@@ -1,14 +1,47 @@
-decorator==4.0.10
-Flask==0.12
-Flask-Cors==3.0.2
-Flask-SQLAlchemy==2.1
-gunicorn==19.6.0
-itsdangerous==0.24
-Jinja2==2.8.1
-MarkupSafe==0.23
-pbr==1.10.0
-psycopg2==2.6.2
-six==1.10.0
-SQLAlchemy==1.1.4
-Werkzeug==0.15.3
-wheel==0.29.0
+#
+# This file is autogenerated by pip-compile with python 3.9
+# To update, run:
+#
+#    pip-compile requirements.in
+#
+click==8.0.4
+    # via
+    #   flask
+    #   pip-tools
+flask==2.0.3
+    # via
+    #   -r requirements.in
+    #   flask-cors
+    #   flask-sqlalchemy
+flask-cors==3.0.10
+    # via -r requirements.in
+flask-sqlalchemy==2.5.1
+    # via -r requirements.in
+greenlet==1.1.2
+    # via sqlalchemy
+itsdangerous==2.1.0
+    # via flask
+jinja2==3.0.3
+    # via flask
+markupsafe==2.1.0
+    # via jinja2
+pep517==0.12.0
+    # via pip-tools
+pip-tools==6.5.1
+    # via -r requirements.in
+psycopg2-binary==2.9.3
+    # via -r requirements.in
+six==1.16.0
+    # via flask-cors
+sqlalchemy==1.4.31
+    # via flask-sqlalchemy
+tomli==2.0.1
+    # via pep517
+werkzeug==2.0.3
+    # via flask
+wheel==0.37.1
+    # via pip-tools
+
+# The following packages are considered to be unsafe in a requirements file:
+# pip
+# setuptools