Actually install libidn in release workflow (#539)

Author: dentarg

.github/workflows/release.yml

@@ -17,7 +17,6 @@ jobs:
         run: echo "VERSION=$(echo ${{ github.ref }} | cut -d - -f 2)" >> "$GITHUB_ENV"
 
       - name: Install libidn
-        if: startsWith(matrix.os, 'ubuntu')
         run: sudo apt-get install libidn11-dev
 
       - uses: actions/checkout@v4