Cannot analyze Java 21

[honmaharuki]

My understanding is that Java 21 support was introduced in the following release:
https://github.com/spotbugs/spotbugs/releases/tag/4.8.4
However, the version of SpotBugs currently being used is 4.7.3, which does not support Java 21 analysis.

As a result, classes are not being loaded, as shown below:
IntelliJ SpotBugs plugin: Analysis Finished Found 0 bugs in 0 class (no class files found more...) using IntelliJ SpotBugs plugin 1.2.7 with SpotBugs version 4.7.3.