Bump django-silk from 5.1.0 to 5.2.0 in /requirements

Bumps [django-silk](https://github.com/jazzband/django-silk) from 5.1.0 to 5.2.0.
- [Release notes](https://github.com/jazzband/django-silk/releases)
- [Changelog](https://github.com/jazzband/django-silk/blob/master/CHANGELOG.md)
- [Commits](jazzband/django-silk@5.1.0...5.2.0)

---
updated-dependencies:
- dependency-name: django-silk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements/main.txt

@@ -7,7 +7,7 @@ django-compressor==4.4
 django-htmlmin==0.11.0
 django-model-utils==4.5.1
 django-searchable-encrypted-fields==0.2.1
-django-silk==5.1.0
+django-silk==5.2.0
 django-solo==2.2.0
 django-url-or-relative-url-field==0.2.0
 djangorestframework==3.15.1