Sometimes, not always, the Generate docs step in .github/workflows/docs.yml emits this warning:
Warning: The POM for com.github.java-json-tools:jackson-coreutils:jar:2.0-SNAPSHOT is missing, no dependency information available
Note that the POM for "2.0" is actually available, but not "2.0-SNAPSHOT".
This, so far, does not affect the ability to generate Javadoc.