Add nightly CI for OpenJDK 27

Feature Request

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Is your feature request related to a problem?

• No.

Describe the feature you would like.

• Add nightly CI for OpenJDK 27. See https://jdk.java.net/27/ .
• We actually need to wait for https://github.com/adoptium to release the JDK 27 build artifacts, because ShardingSphere does not use the OpenJDK reference implementation, but rather Eclipse Adoptium's downstream JDK version. This work is in the early stages. https://github.com/adoptium/aqa-tests/issues/7688 is not yet complete.
• We will not migrate to an upstream OpenJDK distribution, because https://wiki.openjdk.org/spaces/JDKUpdates/pages/170131468/JDK+25u essentially expects users to obtain updates via Eclipse Adoptium.