Bump tj-actions/branch-names from 6 to 8 in /.github/workflows

Bumps [tj-actions/branch-names](https://github.com/tj-actions/branch-names) from 6 to 8.
- [Release notes](https://github.com/tj-actions/branch-names/releases)
- [Changelog](https://github.com/tj-actions/branch-names/blob/main/HISTORY.md)
- [Commits](https://github.com/tj-actions/branch-names/compare/v6...v8)

---
updated-dependencies:
- dependency-name: tj-actions/branch-names
  dependency-version: '8'
  dependency-type: direct:production
...

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

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       - name: Get branch name
         id: branch-names
-        uses: tj-actions/branch-names@v6
+        uses: tj-actions/branch-names@v8
 
       - uses: actions/checkout@v4
         with: