ci: rebase before pushing release/pre-release commits

Why: Both release.yaml and pre_release.yaml push the changelog/version
bump to master via EndBug/add-and-commit. If anything else lands on
master between checkout and push, the push is rejected with `cannot
lock ref` — non-fast-forward, even when the service-account bypass
succeeds. Adding `pull: '--rebase --autostash'` lets EndBug rebase
onto the new tip first.

Author: B4nan

.github/workflows/pre_release.yaml

@@ -92,6 +92,7 @@ jobs:
                   author_name: Apify Release Bot
                   author_email: noreply@apify.com
                   message: "chore(release): Update changelog and package version [skip ci]"
+                  pull: '--rebase --autostash'
 
             - name: Get pre-release version
               id: get-pre-release-version

.github/workflows/release.yaml

@@ -125,6 +125,7 @@ jobs:
                   author_name: Apify Release Bot
                   author_email: noreply@apify.com
                   message: "chore(release): Update changelog and package version [skip ci]"
+                  pull: '--rebase --autostash'
 
     build-bundles:
         name: Build bundles