Bump skills/action-text-variables in the development-dependencies group

Bumps the development-dependencies group with 1 update: [skills/action-text-variables](https://github.com/skills/action-text-variables).


Updates `skills/action-text-variables` from 1 to 3
- [Release notes](https://github.com/skills/action-text-variables/releases)
- [Commits](skills/action-text-variables@v1...v3)

---
updated-dependencies:
- dependency-name: skills/action-text-variables
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: development-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/doc-update.yml

@@ -117,7 +117,7 @@ jobs:
     steps:
     - name: Format PR comment
       id: commentformatter
-      uses: skills/action-text-variables@v1
+      uses: skills/action-text-variables@v3
       with:
         template-vars: |
             text='${{ needs.lint-markdown.outputs.report }}'