Alphabetically order the test files in CMakeLists.txt

Author: alinaliBQ

cpp/src/arrow/flight/sql/odbc/tests/CMakeLists.txt

@@ -34,8 +34,8 @@ add_arrow_test(flight_sql_odbc_test
                SOURCES
                odbc_test_suite.cc
                odbc_test_suite.h
-               errors_test.cc
                connection_test.cc
+               errors_test.cc
                # Enable Protobuf cleanup after test execution
                # GH-46889: move protobuf_test_util to a more common location
                ../../../../engine/substrait/protobuf_test_util.cc