Update Flask-WTF to address test warnings

[michplunkett]

Fixes issue

#1054

Description of Changes

Addressed the below error by updating Flask-WTF:

../../local/lib/python3.11/site-packages/flask_wtf/recaptcha/widgets.py:2: 10 warnings
  /usr/local/lib/python3.11/site-packages/flask_wtf/recaptcha/widgets.py:2: DeprecationWarning: 'flask.Markup' is deprecated and will be removed in Flask 2.4. Import 'markupsafe.Markup' instead.
    from flask import Markup

Tests and Linting

• This branch is up-to-date with the develop branch.
• pytest passes on my local development environment.
• pre-commit passes on my local development environment.
• Verified warning is no longer in the warnings summary.

=============================================================================================== warnings summary ===============================================================================================
OpenOversight/tests/test_models.py::test_salary_repr
  /usr/src/app/OpenOversight/tests/test_models.py:170: SAWarning: Dialect sqlite+pysqlite does *not* support Decimal objects natively, and SQLAlchemy must convert from floating point - rounding errors and other issues may occur. Please consider storing Decimal numbers as strings or integers on this platform for lossless storage.
    salary = Salary.query.first()

OpenOversight/tests/test_commands.py::test_add_department__duplicate
OpenOversight/tests/test_models.py::test__uuid_uniqueness_constraint
OpenOversight/tests/routes/test_singular_redirects.py::test_redirect_add_salary
  /usr/src/app/OpenOversight/tests/conftest.py:325: SAWarning: transaction already deassociated from connection
    transaction.rollback()

OpenOversight/tests/test_commands.py::test_csv_import_new
  /usr/src/app/OpenOversight/tests/conftest.py:855: SAWarning: Dialect sqlite+pysqlite does *not* support Decimal objects natively, and SQLAlchemy must convert from floating point - rounding errors and other issues may occur. Please consider storing Decimal numbers as strings or integers on this platform for lossless storage.
    if len(list(officer.salaries)) > 0:

OpenOversight/tests/routes/test_image_tagging.py::test_admin_can_delete_tag
OpenOversight/tests/routes/test_descriptions.py::test_officer_descriptions_markdown
OpenOversight/tests/test_database_cache.py::test_documented_assignments
  /usr/local/lib/python3.11/site-packages/jinja2/environment.py:487: SAWarning: Dialect sqlite+pysqlite does *not* support Decimal objects natively, and SQLAlchemy must convert from floating point - rounding errors and other issues may occur. Please consider storing Decimal numbers as strings or integers on this platform for lossless storage.
    return getattr(obj, attribute)

OpenOversight/tests/test_commands.py::test_csv_new_salary
  /usr/src/app/OpenOversight/tests/test_commands.py:463: FutureWarning: Setting an item of incompatible dtype is deprecated and will raise an error in a future version of pandas. Value '123456.78' has dtype incompatible with float64, please explicitly cast to a compatible dtype first.
    df.loc[0, "salary"] = "123456.78"

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

---------- coverage: platform linux, python 3.11.9-final-0 -----------

[michplunkett]

https://github.com/wtforms/flask-wtf/releases/tag/v1.1.2

[b-meson]

Thanks for this, looks great @michplunkett