Bump flask from 0.12.4 to 1.0 in /ns-project

Bumps [flask](https://github.com/pallets/flask) from 0.12.4 to 1.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/master/CHANGES.rst)
- [Commits](pallets/flask@0.12.4...1.0)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

ns-project/requirements.txt

@@ -1,4 +1,4 @@
 Flask_WTF==0.14.2
 WTForms==2.2.1
 requests==2.22.0
-Flask==0.12.4
+Flask==1.0