elf: update libbpf integration tests

Build and Lint

Run unit tests on previous stable Go

Run unit tests - KERNEL_VERSION=6.1

Run unit tests - KERNEL_VERSION=5.15

Run unit tests - KERNEL_VERSION=5.10

Run unit tests - KERNEL_VERSION=5.4

Run unit tests - KERNEL_VERSION=4.19

Run unit tests - KERNEL_VERSION=4.14

Run unit tests - KERNEL_VERSION=4.9