AArch64 compiler is updated to gcc 14.2

**Issue or pull request number:**
https://github.com/eclipse-openj9/openj9/pull/23957

**Overview:**
Linux AArch64 compiler is updated to gcc 14.2, making it the same as all other Linux platforms.

**Release target:**
0.60

**Applies to the following JDK versions:**
All

**Applies to the following platforms:**
Linux AArch64