Add #![no_builtins]

See https://github.com/aya-rs/aya/pull/698 for rationale.

{{project-name}}-ebpf/src/main.rs

@@ -1,5 +1,6 @@
-#![no_std]
+#![no_builtins]
 #![no_main]
+#![no_std]
 {% case program_type -%}
 {%- when "kprobe" %}
 use aya_bpf::{macros::kprobe, programs::ProbeContext};