Update pyyaml-include requirement from <2.0 to <3.0 (#476)

Updates the requirements on [pyyaml-include](https://github.com/tanbro/pyyaml-include) to permit the latest version.
- [Changelog](https://github.com/tanbro/pyyaml-include/blob/main/CHANGELOG.md)
- [Commits](tanbro/pyyaml-include@0.1a1...v2.1)

---
updated-dependencies:
- dependency-name: pyyaml-include
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -19,7 +19,7 @@ dependencies = [
     "sphinx", # Used to automatically generate documentation
     "sphinx-rtd-theme", # Used to render documentation
     "sphinx-copybutton",
-    "pyyaml-include<2.0",
+    "pyyaml-include<3.0",
 ]
 
 [project.optional-dependencies]