Update code coverage badge and link

Author: garydgregory

README.md

@@ -44,7 +44,7 @@ Apache Commons BeanUtils
 ===================
 
 [![Build Status](https://travis-ci.org/apache/commons-beanutils.svg)](https://travis-ci.org/apache/commons-beanutils)
-[![Coverage Status](https://coveralls.io/repos/apache/commons-beanutils/badge.svg)](https://coveralls.io/r/apache/commons-beanutils)
+[![Coverage Status](https://codecov.io/gh/apache/commons-beanutils/branch/master/graph/badge.svg)](https://app.codecov.io/gh/apache/commons-beanutils/branch/master)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.apache.commons/commons-beanutils2/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.apache.commons/commons-beanutils2/)
 [![Javadocs](https://javadoc.io/badge/org.apache.commons/commons-beanutils2/2.0.0.svg)](https://javadoc.io/doc/org.apache.commons/commons-beanutils2/2.0.0)
 [![CodeQL](https://github.com/apache/commons-beanutils/workflows/CodeQL/badge.svg)](https://github.com/apache/commons-beanutils/actions/workflows/codeql-analysis.yml?query=workflow%3ACodeQL)