Update drf-multitokenauth requirement

Updates the requirements on [drf-multitokenauth](https://github.com/anexia/drf-multitokenauth) to permit the latest version.
- [Release notes](https://github.com/anexia/drf-multitokenauth/releases)
- [Changelog](https://github.com/anexia/drf-multitokenauth/blob/main/CHANGELOG.md)
- [Commits](anexia/drf-multitokenauth@2.0.0...2.1.0)

---
updated-dependencies:
- dependency-name: drf-multitokenauth
  dependency-type: direct:production
...

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

requirements/base.txt

@@ -4,7 +4,7 @@ markdown>=3.2,<3.8
 django-filter>=2.4,<24.4
 django-cors-headers>=4.0,<4.7
 django-userforeignkey>=0.3,<0.6
-drf-multitokenauth>=2.0.0,<2.1.0
+drf-multitokenauth>=2.0.0,<2.2.0
 django-rest-registration>=0.8.3,<0.10
 django-rest-passwordreset>=1.1,<1.5
 drf-spectacular[sidecar]>=0.26.2,<0.28