[Nacos 3.0] Maven install failed.

[YunWZ]

Describe the bug

Execute command: mv package install -DskipTests

console output:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-pmd-plugin:3.8:pmd (pmd) on project nacos-server: Execution pmd of goal org.apache.maven.plugins:maven-pmd-plugin:3.8:pmd failed: org.apache.maven.reporting.MavenReportException: Unsupported targetJdk value '8'. -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 

Expected behavior

The command was executed successfully.

Actually behavior
A clear and concise description of what you actually to happen.

How to Reproduce
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4. See errors

Desktop (please complete the following information):

• OS: [e.g. Centos]
• Version [e.g. nacos-server 1.3.1, nacos-client 1.3.1]
• Module [e.g. naming/config]
• SDK [e.g. original, spring-cloud-alibaba-nacos, dubbo]

Additional context
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