org.jboss.microcontainer:jboss-deployers-core-spi has moved to groupId org.jboss.deployers

You need update ejb3-core/client to point to the right dependency:

org.jboss.deployers:jboss-deployers-core-spi

rather thann

org.jboss.microcontainer:jboss-deployers-core-spi

I had to exclude this in the AS build for ejb3-core, ejb3-core-client

+ <exclusion>
+ <groupId>org.jboss.microcontainer</groupId>
+ <artifactId>jboss-deployers-core-spi</artifactId>
+ </exclusion>