Correct return types for odbc_connect() and odbc_prepare()

Both functions return false in the event of an error.
https://www.php.net/manual/en/function.odbc-connect.php#refsect1-function.odbc-connect-returnvalues
https://www.php.net/manual/en/function.odbc-prepare.php#refsect1-function.odbc-prepare-returnvalues

Author: duncan3dc

src/Reflection/SignatureMap/functionMap.php

@@ -8007,7 +8007,7 @@
 'odbc_columnprivileges' => ['resource', 'connection_id'=>'resource', 'catalog'=>'string', 'schema'=>'string', 'table'=>'string', 'column'=>'string'],
 'odbc_columns' => ['resource', 'connection_id'=>'resource', 'qualifier='=>'string', 'owner='=>'string', 'table_name='=>'string', 'column_name='=>'string'],
 'odbc_commit' => ['bool', 'connection_id'=>'resource'],
-'odbc_connect' => ['resource', 'dsn'=>'string', 'user'=>'string', 'password'=>'string', 'cursor_option='=>'int'],
+'odbc_connect' => ['resource|false', 'dsn'=>'string', 'user'=>'string', 'password'=>'string', 'cursor_option='=>'int'],
 'odbc_cursor' => ['string', 'result_id'=>'resource'],
 'odbc_data_source' => ['array', 'connection_id'=>'resource', 'fetch_type'=>'int'],
 'odbc_do' => ['resource', 'connection_id'=>'resource', 'query'=>'string', 'flags='=>'int'],
@@ -8033,7 +8033,7 @@
 'odbc_num_fields' => ['int', 'result_id'=>'resource'],
 'odbc_num_rows' => ['int', 'result_id'=>'resource'],
 'odbc_pconnect' => ['resource', 'dsn'=>'string', 'user'=>'string', 'password'=>'string', 'cursor_option='=>'int'],
-'odbc_prepare' => ['resource', 'connection_id'=>'resource', 'query'=>'string'],
+'odbc_prepare' => ['resource|false', 'connection_id'=>'resource', 'query'=>'string'],
 'odbc_primarykeys' => ['resource', 'connection_id'=>'resource', 'qualifier'=>'string', 'owner'=>'string', 'table'=>'string'],
 'odbc_procedurecolumns' => ['resource', 'connection_id'=>'', 'qualifier'=>'string', 'owner'=>'string', 'proc'=>'string', 'column'=>'string'],
 'odbc_procedures' => ['resource', 'connection_id'=>'', 'qualifier'=>'string', 'owner'=>'string', 'name'=>'string'],