Replace Array.Empty with C# 12 collection expression.

Author: bgrainger

src/MySqlConnector/MySqlDataReader.cs

@@ -347,7 +347,7 @@ public ReadOnlyCollection<DbColumn> GetColumnSchema()
 	{
 		var hasNoSchema = !m_resultSet.HasResultSet || m_resultSet.ContainsCommandParameters;
 		if (hasNoSchema)
-			return new ReadOnlyCollection<DbColumn>(Array.Empty<DbColumn>());
+			return new ReadOnlyCollection<DbColumn>([]);
 
 		var columnDefinitions = m_resultSet.ColumnDefinitions;
 		var resultSet = GetResultSet();

src/MySqlConnector/Protocol/Payloads/AuthenticationMethodSwitchRequestPayload.cs

@@ -22,7 +22,7 @@ public static AuthenticationMethodSwitchRequestPayload Create(ReadOnlySpan<byte>
 			// if the packet is just the header byte (0xFE), it's an "Old Authentication Method Switch Request Packet"
 			// (possibly sent by a server that doesn't support CLIENT_PLUGIN_AUTH)
 			name = "mysql_old_password";
-			data = Array.Empty<byte>();
+			data = [];
 		}
 		else
 		{

src/MySqlConnector/Protocol/Payloads/EmptyPayload.cs

@@ -2,5 +2,5 @@ namespace MySqlConnector.Protocol.Payloads;
 
 internal static class EmptyPayload
 {
-	public static PayloadData Instance { get; } = new(Array.Empty<byte>());
+	public static PayloadData Instance { get; } = new([]);
 }

src/MySqlConnector/Protocol/Serialization/AuthenticationUtility.cs

@@ -10,7 +10,7 @@ namespace MySqlConnector.Protocol.Serialization;
 internal static class AuthenticationUtility
 {
 	public static byte[] CreateAuthenticationResponse(ReadOnlySpan<byte> challenge, string password) =>
-		string.IsNullOrEmpty(password) ? Array.Empty<byte>() : HashPassword(challenge, password);
+		string.IsNullOrEmpty(password) ? [] : HashPassword(challenge, password);
 
 	/// <summary>
 	/// Hashes a password with the "Secure Password Authentication" method.
@@ -54,14 +54,8 @@ public static byte[] HashPassword(ReadOnlySpan<byte> challenge, string password)
 		return hashedPassword.ToArray();
 	}
 
-	public static byte[] CreateScrambleResponse(ReadOnlySpan<byte> nonce, string password)
-	{
-		var scrambleResponse = string.IsNullOrEmpty(password)
-			? Array.Empty<byte>()
-			: HashPasswordWithNonce(nonce, password);
-
-		return scrambleResponse;
-	}
+	public static byte[] CreateScrambleResponse(ReadOnlySpan<byte> nonce, string password) =>
+		string.IsNullOrEmpty(password) ? [] : HashPasswordWithNonce(nonce, password);
 
 #if NET5_0_OR_GREATER
 	[SkipLocalsInit]