Bump imageio-ffmpeg from 0.4.9 to 0.5.1 in /requirements

Bumps [imageio-ffmpeg](https://github.com/imageio/imageio-ffmpeg) from 0.4.9 to 0.5.1.
- [Release notes](https://github.com/imageio/imageio-ffmpeg/releases)
- [Commits](imageio/imageio-ffmpeg@v0.4.9...v0.5.1)

---
updated-dependencies:
- dependency-name: imageio-ffmpeg
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements.txt

@@ -17,7 +17,7 @@ joblib>=1.2.0
 protobuf>=3.20.2
 ovmsclient>=2022.3
 orjson>=3.10.0
-imageio-ffmpeg==0.4.9
+imageio-ffmpeg==0.5.1
 cryptography>=42.0.7
 semver>=3.0.2
 urllib3==1.26.*