Bump rq from 1.4.2 to 1.5.1 in /cvat/requirements (#2065)

Bumps [rq](https://github.com/nvie/rq) from 1.4.2 to 1.5.1.
- [Release notes](https://github.com/nvie/rq/releases)
- [Changelog](https://github.com/rq/rq/blob/master/CHANGES.md)
- [Commits](https://github.com/nvie/rq/compare/v1.4.2...v1.5.1)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

cvat/requirements/base.txt

@@ -16,7 +16,7 @@ rcssmin==1.0.6
 redis==3.5.3
 rjsmin==1.1.0
 requests==2.24.0
-rq==1.4.2
+rq==1.5.1
 rq-scheduler==0.10.0
 scipy==1.4.1
 sqlparse==0.3.1