ORC-713: Add Java 15 to GitHub action (#611)
ORC-713: Add Java 15 to GitHub action (#611)

### What changes were proposed in this pull request?

This PR aims to add Java 15 to GitHub action as a preparation for Java 17.

### Why are the changes needed?

Java 17 is the next LTS.

### How was this patch tested?

Pass the GitHub action.
omalley/orc,apache/orc,apache/orc,apache/orc,apache/orc,omalley/orc,omalley/orc,omalley/orc,apache/orc,omalley/orc,omalley/orc,apache/orc,apache/orc,apache/orc,omalley/orc