Bump pyyaml from 5.3.1 to 5.4 in /cutout/worker

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.3.1 to 5.4.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](yaml/pyyaml@5.3.1...5.4)

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

Author: dependabot[bot]

cutout/worker/requirements.txt

@@ -1,5 +1,5 @@
 pandas == 1.1.3
-pyyaml == 5.3.1
+pyyaml == 5.4
 rpdb == 0.1.6
 requests == 2.24.0
 numpy >= 1.19.2