Database names with spaces cause firewall detection to fail - sqlcmd argument not quoted

When the connection string contains a database name with a space (e.g. `Initial Catalog=MyDatabase Live`), the firewall IP detection step fails because the database name is not properly quoted when passed to sqlcmd.

**Error:**
```
Failed to add firewall rule. Unable to detect client IP Address. Sqlcmd: 'Live': Unknown command. Enter '--help' for command help.
```

**Debug output:**
```
##[debug]Validating if client has access to 'MyDatabase Live' on 'myserver.database.windows.net'.
##[debug]The process 'sqlcmd' failed with exit code 1
##[debug]SqlCmd stderr: Sqlcmd: 'Live': Unknown command. Enter '--help' for command help.
```

The action correctly parses the database name as `MyDatabase Live`, but fails to quote it when executing sqlcmd.

**Environment:**
- `azure/sql-action@v2.3`
- `runs-on: ubuntu-latest`
- Azure SQL Database with `Authentication=Active Directory Default`

**Connection string:**
```
Server=myserver.database.windows.net;Initial Catalog=MyDatabase Live;Authentication=Active Directory Default;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;
```

**Attempted workarounds (none worked):**
- Single quotes: `Initial Catalog='MyDatabase Live'`
- Double quotes: `Initial Catalog="MyDatabase Live"`

**Potential root cause:**

The `detectIPAddress` function extracts the database name correctly but may pass it to sqlcmd as the `-d` argument without quoting, resulting in:

```
sqlcmd -S myserver.database.windows.net -d MyDatabase Live -Q "select getdate()"
```

**Expected behaviour:**

```
sqlcmd -S myserver.database.windows.net -d "MyDatabase Live" -Q "select getdate()"
```