build: bump imageio-ffmpeg from 0.5.1 to 0.6.0 in the documentation group (#3671)

* build: bump imageio-ffmpeg in the documentation group

Bumps the documentation group with 1 update: [imageio-ffmpeg](https://github.com/imageio/imageio-ffmpeg).


Updates `imageio-ffmpeg` from 0.5.1 to 0.6.0
- [Release notes](https://github.com/imageio/imageio-ffmpeg/releases)
- [Commits](imageio/imageio-ffmpeg@v0.5.1...v0.6.0)

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

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

* chore: adding changelog file 3671.dependencies.md [dependabot-skip]

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: pyansys-ci-bot <[email protected]>

Author: dependabot[bot]

doc/changelog.d/3671.dependencies.md

@@ -0,0 +1 @@
+build: bump imageio-ffmpeg from 0.5.1 to 0.6.0 in the documentation group

pyproject.toml

@@ -77,7 +77,7 @@ doc = [
     "ansys-sphinx-theme==1.2.4",
     "ansys-tools-visualization-interface==0.6.2",
     "grpcio==1.69.0",
-    "imageio-ffmpeg==0.5.1",
+    "imageio-ffmpeg==0.6.0",
     "imageio==2.36.1",
     "jupyter_sphinx==0.5.3",
     "jupyter==1.1.1",