Update ElasticJob.en.md

Update CNCF.en.md

Update proxy.en.md

Bugfix: schemaContext status synchronized in BackendConnection.

#6872, remove duplicated test case

fix on duplicate key update statement parse parametersCount error

Update code-conduct

Add test cases for shardingsphere-jdbc-spring-namespace-infra module

* fix issue 6909

* modify variable name

* Optimize the assertion

Add explain context