Bump EndBug/add-and-commit from 8 to 9

Bumps [EndBug/add-and-commit](https://github.com/endbug/add-and-commit) from 8 to 9.
- [Release notes](https://github.com/endbug/add-and-commit/releases)
- [Commits](EndBug/add-and-commit@v8...v9)

---
updated-dependencies:
- dependency-name: EndBug/add-and-commit
  dependency-version: '9'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/GeneratePlantumlImages.yml

@@ -35,6 +35,6 @@ jobs:
 
 
       - name: Add & Commit
-        uses: EndBug/add-and-commit@v8
+        uses: EndBug/add-and-commit@v9
         with:
           add: 'images/diagrams/'