Issues with Nordic Characters

Hi !
My action looks like this:
```
- name: Deploy Post-script Database
uses: Azure/sql-action@v1
with:
server-name: ${{steps.ServerName}}
connection-string: ${{...sql-pipelineconfig-connectionstring}}
sql-file: ${{ github.workspace }}\Path\to\script\file.sql
```

The issue I am facing is that nordic characters - ÅÆØ - are replaced by garbage symbols, E.g:
'Kårstø' becomes 'KÃ…RSTØ'

The Collation is set correctly on the Azure SQL database, and we can run the script manually in in SQL Server Management Studio to get the correct output.

Tried a couple of different things, among others verifying database collation, column types, that the generated files have the correct UTF encoding.
The last thing I can think of is that it is possibly an issue with the action

まず、ÅÆØ 文字を含む sql-file を使って Azure/sql-action@v1 ワークフローを再現し、その後、そのファイルが action でどのように処理されるかを調べます。SQL Server Management Studio で手動実行した場合と同じように、デプロイされた SQL で Nordic 文字が保持されれば完了です。

索引モデルが issue の本文から書いたものです。