Check out entire repo so switching to main branch works in last step

(cherry picked from commit 62ec7b8)

Author: marcphilipp

.github/workflows/release.yml

@@ -201,7 +201,6 @@ jobs:
         with:
           repository: ${{ github.repository_owner }}/junit-examples
           token: ${{ secrets.JUNIT_BUILDS_GITHUB_TOKEN_EXAMPLES_REPO }}
-          fetch-depth: 1
           ref: releases/6.0.x
           persist-credentials: true
       - name: Set up JDK