[test][llvm-objdump][AArch64] Add tests for ELF AUTH constants (#74298)

This patch introduces llvm-objdump tests for new `AARCH64_AUTH_RELR`,
`AARCH64_AUTH_RELRSZ` and `AARCH64_AUTH_RELRENT` dynamic tags.

Depends on https://github.com/llvm/llvm-project/pull/74874