ci: Properly bump to focal for win cross build

ci/test/wrap-wine.sh

@@ -6,6 +6,8 @@
 
 export LC_ALL=C.UTF-8
 
+wine --version
+
 for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/univalue/{no_nul,test_json,unitester,object}}.exe; do
     # shellcheck disable=SC2044
     for b in $(find "${BASE_ROOT_DIR}" -executable -type f -name "$(basename $b_name)"); do
@@ -13,7 +15,7 @@ for b_name in {"${BASE_OUTDIR}/bin"/*,src/secp256k1/*tests,src/univalue/{no_nul,
         echo "Wrap $b ..."
         mv "$b" "${b}_orig"
         echo '#!/usr/bin/env bash' > "$b"
-        echo "wine64 \"${b}_orig\" \"\$@\"" >> "$b"
+        echo "wine \"${b}_orig\" \"\$@\"" >> "$b"
         chmod +x "$b"
       fi
     done