Fix deprecated import (Sourcery refactored)

[sourcery-ai]

Pull Request #66 refactored by Sourcery.

Since the original Pull Request was opened as a fork in a contributor's
repository, we are unable to create a Pull Request branching from it.

To incorporate these changes, you can either:

1. Merge this Pull Request instead of the original, or

2. Ask your contributor to locally incorporate these commits and push them to
   the original Pull Request

   Incorporate changes via command line

   git fetch https://github.com/jamespacileo/django-pure-pagination pull/66/head
   git merge --ff-only FETCH_HEAD
   git push

NOTE: As code is pushed to the original Pull Request, Sourcery will
re-run and update (force-push) this Pull Request with new refactorings as
necessary. If Sourcery finds no refactorings at any point, this Pull Request
will be closed automatically.

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[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.12%.

Quality metrics	Before	After	Change
Complexity	5.56 ⭐	5.56 ⭐	0.00
Method Length	36.87 ⭐	37.00 ⭐	0.13 👎
Working memory	5.53 ⭐	5.58 ⭐	0.05 👎
Quality	79.09% ⭐	78.97% ⭐	-0.12% 👎

Other metrics	Before	After	Change
Lines	227	227	0

Changed files	Quality Before	Quality After	Quality Change
setup.py	63.36% 🙂	63.36% 🙂	0.00%
pure_pagination/paginator.py	79.60% ⭐	79.48% ⭐	-0.12% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
pure_pagination/paginator.py	Page.pages	13 🙂	140 😞	8 🙂	55.90% 🙂	Try splitting into smaller methods

Legend and Explanation

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[sourcery-ai]

Function Page.__repr__ refactored with the following changes:

• Replace interpolated string formatting with f-string (replace-interpolation-with-fstring)

[sourcery-ai]

Function Page._other_page_querystring refactored with the following changes:

• Replace interpolated string formatting with f-string (replace-interpolation-with-fstring)