prepare.yml in mnconvert-1.42.0

- old
+ new

@@ -5,12 +5,16 @@
     secrets:
       pat_token:
         required: false
 
 jobs:
+  prepare:
+    uses: metanorma/ci/.github/workflows/prepare-rake.yml@main
+
   prepare-ieee:
     runs-on: ubuntu-latest
+    needs: prepare
     concurrency:
       group: '${{ github.workflow }}-${{ github.head_ref || github.ref_name }}'
       cancel-in-progress: true
     steps:
       - run: mkdir ieee
@@ -26,10 +30,10 @@
           repository: metanorma/mn-samples-ieee
           path: ieee/samples
 
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.0'
+          ruby-version: ${{ needs.prepare.outputs.default-ruby-version }}
           bundler-cache: true
           working-directory: ieee/samples
 
       - uses: actions-mn/site-gen@v1
         with: