Update peter-evans/create-pull-request action to v8 (#641)

| datasource  | package                         | from    | to     |
| ----------- | ------------------------------- | ------- | ------ |
| github-tags | peter-evans/create-pull-request | v7.0.11 | v8.0.0 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/update-openshift-versions.yml

@@ -27,7 +27,7 @@ jobs:
 
       - name: Create Pull Request
         if: steps.changes.outputs.changed == 'true'
-        uses: peter-evans/create-pull-request@22a9089034f40e5a961c8808d113e2c98fb63676 # v7.0.11
+        uses: peter-evans/create-pull-request@98357b18bf14b5342f975ff684046ec3b2a07725 # v8.0.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           commit-message: 'update OpenShift supported versions'