Update dependency Flask-SQLAlchemy to v2.5.1

Author: renovate[bot]

_RESOURCES/course-work/python-project-starter/Pipfile

@@ -11,7 +11,7 @@ python-dotenv = "==0.14.0"
 six = "==1.15.0"
 Flask = "==1.1.2"
 Flask-Cors = "==3.0.8"
-Flask-SQLAlchemy = "==2.4.4"
+Flask-SQLAlchemy = "==2.5.1"
 Flask-WTF = "==0.14.3"
 Jinja2 = "==2.11.2"
 MarkupSafe = "==2.0.1"