ci: fix release workflow

.github/workflows/release.yml

@@ -9,6 +9,13 @@ jobs:
         name: Create release
         runs-on: ubuntu-latest
         steps:
+            - name: Checkout code
+              uses: actions/checkout@v2
+            - name: Setup
+              run: |
+                  sudo apt update
+                  sudo apt install ruby
+                  sudo gem install ronn
             - name: Prepare release
               id: prepare_release
               run: |
@@ -17,8 +24,6 @@ jobs:
                   changelog="${changelog//$'\n'/'%0A'}"
                   changelog="${changelog//$'\r'/'%0D'}"
                   echo "::set-output name=changelog::$changelog"
-            - name: Checkout code
-              uses: actions/checkout@v2
             - name: Build locales
               env:
                   POEDITOR_API_ACCESS: ${{ secrets.POEDITOR_API_ACCESS }}