Bump the github-actions group with 2 updates (#530)

Bumps the github-actions group with 2 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request).


Updates `actions/upload-artifact` from 5 to 6
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

Updates `peter-evans/create-pull-request` from 7 to 8
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v7...v8)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: peter-evans/create-pull-request
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/tox.yaml

@@ -39,7 +39,7 @@ jobs:
       run: tox -e cover
 
     - name: Archive code coverage results
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: code-coverage-report
         path: cover/

.github/workflows/update-dependencies.yaml

@@ -59,7 +59,7 @@ jobs:
           app-private-key: ${{ secrets.AUTOMATION_APP_PRIVATE_KEY }}
 
       - name: Propose changes via PR if required
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ steps.generate-app-token.outputs.token }}
           commit-message: >-
@@ -131,7 +131,7 @@ jobs:
           app-private-key: ${{ secrets.AUTOMATION_APP_PRIVATE_KEY }}
 
       - name: Propose changes via PR if required
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ steps.generate-app-token.outputs.token }}
           commit-message: >-