Track vscode-checkstyle issue with java.checkstyle.configuration pointing to url for google checks

[manastalukdar]

Ref: jdneo/vscode-checkstyle#188

[jdneo]

Hi @manastalukdar,

The root cause is that CheckStyle has some breaking changes from 8.18 to 8.23.

The workaround is to change the URL to: https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-8.18/src/main/resources/google_checks.xml