Bump flask from 1.1.2 to 2.0.1 (#202)

Bumps [flask](https://github.com/pallets/flask) from 1.1.2 to 2.0.1.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/flask/compare/1.1.2...2.0.1)

---
updated-dependencies:
- dependency-name: flask
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

setup.py

@@ -35,7 +35,7 @@ setup(
     keywords='gliding ogn',
     packages=find_packages(exclude=['tests', 'tests.*']),
     install_requires=[
-        'Flask==1.1.2',
+        'Flask==2.0.1',
         'Flask-SQLAlchemy==2.4.4',
         'Flask-Migrate==2.7.0',
         'Flask-Bootstrap==3.3.7.1',