Dependabot #226 to upgrade opentelemetry-instrumentation-flask failed CI

This PR is currently failing CI: https://github.com/Azure-Samples/rag-postgres-openai-python/pull/226 Create a new PR that accomplishes the same goal as that PR, but passes CI. ## Verification tips If you need to create a virtual environment, use the `.venv` folder, like: ``` python -m venv .venv ``` When you have updated packages, make sure you can install them successfully in the virtual environment. To decide what command to use to install the packages, check the repo's README.md and GitHub Actions workflows in the `.github/workflows` directory. Leave a comment on the PR indicating what command you used to verify successful installation.