Bump django from 3.1.4 to 3.1.14 in /Calculate-distance

Bumps [django](https://github.com/django/django) from 3.1.4 to 3.1.14.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.1.4...3.1.14)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Calculate-distance/requirements.txt

@@ -1,4 +1,4 @@
 geopy==2.1.0
 folium==0.12.1
 django-crispy-forms==1.11.0
-Django==3.1.4
+Django==3.1.14