Bump flask from 3.0.0 to 3.1.3 in /workshop/tagging/loadgenerator

Bumps [flask](https://github.com/pallets/flask) from 3.0.0 to 3.1.3.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.0.0...3.1.3)

---
updated-dependencies:
- dependency-name: flask
  dependency-version: 3.1.3
  dependency-type: indirect
...

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

Author: dependabot[bot]

workshop/tagging/loadgenerator/requirements.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file=requirements.txt requirements.in
 #
-blinker==1.7.0
+blinker==1.9.0
     # via flask
 brotli==1.2.0
     # via geventhttpclient
@@ -18,7 +18,7 @@ click==8.1.7
     # via flask
 configargparse==1.7
     # via locust
-flask==3.0.0
+flask==3.1.3
     # via
     #   flask-basicauth
     #   flask-cors
@@ -37,14 +37,15 @@ greenlet==3.0.3
     # via gevent
 idna==3.7
     # via requests
-itsdangerous==2.1.2
+itsdangerous==2.2.0
     # via flask
 jinja2==3.1.6
     # via flask
 locust==2.20.1
     # via -r requirements.in
 markupsafe==2.1.3
     # via
+    #   flask
     #   jinja2
     #   werkzeug
 msgpack==1.0.7