Bump drf-writable-nested from 0.6.4 to 0.7.0 (#9852)

Bumps [drf-writable-nested](https://github.com/beda-software/drf-writable-nested) from 0.6.4 to 0.7.0.
- [Release notes](https://github.com/beda-software/drf-writable-nested/releases)
- [Changelog](https://github.com/beda-software/drf-writable-nested/blob/master/CHANGELOG.md)
- [Commits](beda-software/drf-writable-nested@v0.6.4...v0.7.0)

---
updated-dependencies:
- dependency-name: drf-writable-nested
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -76,7 +76,7 @@ djangorestframework<3.12.0,>=3.8.0
 djangorestframework-gis==1.0
 djangorestframework-guardian==0.3.0
 drf-extensions==0.7.1
-drf-writable-nested==0.6.4
+drf-writable-nested==0.7.0
 drf-spectacular==0.23.1
 dynamic-rest==2.1.2
 Markdown==3.4.1