Initial upgrade to R2DBC Borca

See gh-27976

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/ColumnMapRowMapper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -52,6 +52,7 @@ public class ColumnMapRowMapper implements BiFunction<Row, RowMetadata, Map<Stri
 	public final static ColumnMapRowMapper INSTANCE = new ColumnMapRowMapper();
 
 
+	@SuppressWarnings("deprecation")  // getColumnNames() is deprecated as of R2DBC 0.9
 	@Override
 	public Map<String, Object> apply(Row row, RowMetadata rowMetadata) {
 		Collection<String> columns = rowMetadata.getColumnNames();