ci(deps): bump peter-evans/create-pull-request from 6 to 8

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 6 to 8.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](https://github.com/peter-evans/create-pull-request/compare/v6...v8)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/sync-main-to-earlgrey-hwe.yml

diff --git a/.github/workflows/sync-main-to-earlgrey-hwe.yml b/.github/workflows/sync-main-to-earlgrey-hwe.yml
index 7f2f24d..884c3ef 100644
--- a/.github/workflows/sync-main-to-earlgrey-hwe.yml
+++ b/.github/workflows/sync-main-to-earlgrey-hwe.yml
@@ -35,7 +35,7 @@
           private-key: ${{ secrets.SYNCHRONIZE_BOT_PRIVATE_KEY }}
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ steps.generate-token.outputs.token }}
           branch: automation/sync-main-to-earlgrey-hwe