Bump tj-actions/changed-files in /.github/workflows (#944)

Bumps [tj-actions/changed-files](https://github.com/tj-actions/changed-files) from 41.0.0 to 45.0.8.
- [Release notes](https://github.com/tj-actions/changed-files/releases)
- [Changelog](https://github.com/tj-actions/changed-files/blob/main/HISTORY.md)
- [Commits](tj-actions/changed-files@v41.0.0...v45.0.8)

---
updated-dependencies:
- dependency-name: tj-actions/changed-files
  dependency-version: 45.0.8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

.github/workflows/test_changed_notebooks.yml

@@ -40,7 +40,7 @@ jobs:
 
       - name: Check for new or changed .ipynb files
         id: changed-ipynb
-        uses: tj-actions/changed-files@v41.0.0
+        uses: tj-actions/changed-files@v45.0.8
         with:
           files: |
             doc/source/examples/*.ipynb