Could not find `:unspecified:` when importing transitive dependencies

[rm3l]

Looks like the generated POMs published to Maven Central contain a weird unspecified dependency:

<dependency>
   <groupId/>
    <artifactId>unspecified</artifactId>
    <version/>
</dependency>

This seems to affect maoni, maoni-common as well as all other callback libraries.

• https://search.maven.org/artifact/org.rm3l/maoni/9.1.0/aar
• https://search.maven.org/artifact/org.rm3l/maoni-common/9.1.0/aar
• https://search.maven.org/artifact/org.rm3l/maoni-email/9.1.0/aar
• https://search.maven.org/artifact/org.rm3l/maoni-slack/9.1.0/aar

We need to understand where this comes from and fix it.

[github-actions]

A friendly reminder that this issue had no activity for at least 90 days. Stale issues will be closed after an additional 30 days of inactivity.

[github-actions]

A friendly reminder that this issue had no activity for at least 90 days. Stale issues will be closed after an additional 30 days of inactivity.

[github-actions]

This issue was closed because it has been inactive for 90 days since being marked as stale.