Unpin Rust nightly

The issues with core::sync::atomic got fixed.

Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>

.github/workflows/ci.yml

@@ -47,10 +47,10 @@ jobs:
         with:
           toolchain: stable
 
-      - name: Install latest nightly (pinned to nightly-2023-01-10, https://github.com/aya-rs/aya/issues/490)
+      - name: Install latest nightly
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: nightly-2023-01-10
+          toolchain: nightly
           components: rust-src
 
       - name: Install bpf-linker

{{project-name}}-ebpf/rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel="nightly-2023-01-10"
+channel="nightly"
 # The source code of rustc, provided by the rust-src component, is needed for
 # building eBPF programs.
 components = [ "rustc", "rust-std", "cargo", "rust-docs", "rustfmt", "clippy", "rust-src" ]