Bump peter-evans/create-pull-request from 7 to 8 (#28)

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

Author: dependabot[bot]

.github/workflows/weekly-go-upgrade.yml

@@ -29,7 +29,7 @@ jobs:
           go mod tidy
 
       - name: Create pull request
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           branch: chore/weekly-go-upgrade
           author: "LocalStack Bot <[email protected]>"