fix: change to apt-get and change cache:flush to release from current, to work on first release

.gitea/workflows/release.yaml

@@ -26,8 +26,8 @@ jobs:
           composer validate --no-check-publish && composer install --prefer-dist --no-progress --ignore-platform-reqs
       - name: Install ssh agent, rsync
         run: |
-          apt update
-          apt install -y openssh-client rsync
+          apt-get update
+          apt-get install -y openssh-client rsync
       - name: Switch to release
         uses: deployphp/action@v1
         with: