Unpin dependencies in Pipfile to keep updated to latest version.

backend/Pipfile

@@ -4,45 +4,45 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-autopep8 = "==2.0.2"
-beautifulsoup4 = "==4.12.0"
-bs4 = "==0.0.1"
-certifi = "==2022.12.7"
-charset-normalizer = "==3.1.0"
-click = "==8.1.3"
-flake8 = "==6.0.0"
-flask = "==2.2.3"
-flask-basicauth = "==0.2.0"
-greenlet = "==2.0.2"
-gunicorn = "==20.1.0"
-idna = "==3.4"
-itsdangerous = "==2.1.2"
-jinja2 = "==3.1.2"
-mariadb = "==1.1.6"
-markupsafe = "==2.1.2"
-mccabe = "==0.7.0"
-mysql = "==0.0.3"
-mysqlclient = "==2.1.1"
-numpy = "==1.24.2"
-packaging = "==23.0"
-pandas = "==1.5.3"
-pycodestyle = "==2.10.0"
-pyflakes = "==3.0.1"
-pymysql = "==1.0.3"
-python-dateutil = "==2.8.2"
-pytz = "==2023.3"
-requests = "==2.28.2"
-six = "==1.16.0"
-soupsieve = "==2.4"
-sqlalchemy = "==2.0.7"
-toml = "==0.10.2"
-tomli = "==2.0.1"
-typing-extensions = "==4.5.0"
-urllib3 = "==1.26.15"
-werkzeug = "==2.2.3"
+autopep8 = "*"
+beautifulsoup4 = "*"
+bs4 = "*"
+certifi = "*"
+charset-normalizer = "*"
+click = "*"
+flake8 = "*"
+flask = "*"
+flask-basicauth = "*"
+greenlet = "*"
+gunicorn = "*"
+idna = "*"
+itsdangerous = "*"
+jinja2 = "*"
+mariadb = "*"
+markupsafe = "*"
+mccabe = "*"
+mysql = "*"
+mysqlclient = "*"
+numpy = "*"
+packaging = "*"
+pandas = "*"
+pycodestyle = "*"
+pyflakes = "*"
+pymysql = "*"
+python-dateutil = "*"
+pytz = "*"
+requests = "*"
+six = "*"
+soupsieve = "*"
+sqlalchemy = "*"
+toml = "*"
+tomli = "*"
+typing-extensions = "*"
+urllib3 = "*"
+werkzeug = "*"
 
 [dev-packages]
 
 [requires]
-python_version = "3.9"
-python_full_version = "3.9.17"
+python_version = "3.11"
+python_full_version = "3.11.7"