build(deps): bump flask-wtf from 1.1.1 to 1.2.1

Bumps [flask-wtf](https://github.com/wtforms/flask-wtf) from 1.1.1 to 1.2.1.
- [Release notes](https://github.com/wtforms/flask-wtf/releases)
- [Changelog](https://github.com/wtforms/flask-wtf/blob/main/docs/changes.rst)
- [Commits](wtforms/flask-wtf@v1.1.1...v1.2.1)

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

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

requirements.in

@@ -3,7 +3,7 @@
 
 Flask>=1.1,<2
 Flask-Login==0.6.1
-Flask-WTF==1.1.1
+Flask-WTF==1.2.1
 itsdangerous
 
 digitalmarketplace-apiclient

requirements.txt

@@ -56,7 +56,7 @@ flask-login==0.6.1
     #   digitalmarketplace-utils
 flask-session==0.3.2
     # via digitalmarketplace-utils
-flask-wtf==1.1.1
+flask-wtf==1.2.1
     # via
     #   -r requirements.in
     #   digitalmarketplace-utils