chore(deps): bump GrantBirki/git-diff-action from 2.8.0 to 2.8.1 (#5564)

Bumps [GrantBirki/git-diff-action](https://github.com/grantbirki/git-diff-action) from 2.8.0 to 2.8.1.
- [Release notes](https://github.com/grantbirki/git-diff-action/releases)
- [Commits](https://github.com/grantbirki/git-diff-action/compare/v2.8.0...v2.8.1)

---
updated-dependencies:
- dependency-name: GrantBirki/git-diff-action
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/notify-models.yaml

@@ -18,7 +18,7 @@ jobs:
       with:
         model: 'gemma-3-12b-it' # Any from models.localai.io, or from huggingface.com with: "huggingface://<repository>/file"
         # Check the PR diff using the current branch and the base branch of the PR
-    - uses: GrantBirki/git-diff-action@v2.8.0
+    - uses: GrantBirki/git-diff-action@v2.8.1
       id: git-diff-action
       with:
             json_diff_file_output: diff.json
@@ -99,7 +99,7 @@ jobs:
         docker run -e -ti -d --name local-ai -p 8080:8080 localai/localai:master-ffmpeg-core run --debug $MODEL_NAME
         until [ "`docker inspect -f {{.State.Health.Status}} local-ai`" == "healthy" ]; do echo "Waiting for container to be ready";  docker logs --tail 10 local-ai; sleep 2; done
       # Check the PR diff using the current branch and the base branch of the PR
-    - uses: GrantBirki/git-diff-action@v2.8.0
+    - uses: GrantBirki/git-diff-action@v2.8.1
       id: git-diff-action
       with:
             json_diff_file_output: diff.json