Upgraded to SonarQube 8.9 LTS, still on sonar-scanner-cli v3. Should we also upgrade to latest cli version 188.8.131.5247, or is keep 3 ok?
v3 for us was working fine with 8.9.8 LTS. v3 broke when we moved to 9 though. My guess is that it was caused by the java version shift (9 requires Java 11).
So should still work fine for you, however I have a personal preference to keep up with the tech/releases unless restricted by something.