Bump flask from 0.12.3 to 1.0

Bumps [flask](https://github.com/pallets/flask) from 0.12.3 to 1.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/master/CHANGES.rst)
- [Commits](pallets/flask@0.12.3...1.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-flask==0.12.3
+flask==1.0
 Flask-OAuthlib>=0.9.3
 Flask-Babel==0.9
 Flask-Bower==1.0.1

setup.py

@@ -6,7 +6,7 @@
     include_package_data=True,
     test_suite="tests",
     install_requires=[
-        'flask==0.12',
+        'flask==1.0',
         "Flask-OAuthlib>=0.9.3",
         "Flask-Babel==0.9",
         "Flask-Bower==1.0.1",