Bump imageio from 2.28.0 to 2.34.1 in /requirements (#1520)

Bumps [imageio](https://github.com/imageio/imageio) from 2.28.0 to 2.34.1.
- [Release notes](https://github.com/imageio/imageio/releases)
- [Changelog](https://github.com/imageio/imageio/blob/master/CHANGELOG.md)
- [Commits](imageio/imageio@v2.28.0...v2.34.1)

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

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

Author: dependabot[bot]

requirements/requirements_docs.txt

@@ -1,7 +1,7 @@
 ansys_sphinx_theme==0.15.2
 enum-tools[sphinx]==0.12.0
 graphviz==0.20.1
-imageio==2.28.0
+imageio==2.34.1
 imageio-ffmpeg==0.4.7
 nbsphinx==0.9.3
 pypandoc==1.11

requirements/requirements_test.txt

@@ -1,6 +1,6 @@
 ansys-platform-instancemanagement==1.1.1
 coverage==7.5.0
-imageio==2.28.0
+imageio==2.34.1
 imageio-ffmpeg==0.4.7
 pytest==7.4.2
 pytest-cov==4.1.0