🎯 Update Rust toolchain to default nightly

Updated the Rust toolchain from a specific nightly version to the general nightly version in multiple files. This change aims to ensure better compatibility and ease of maintenance by always using the latest nightly build available.

Signed-off-by: Kevin Valerio <kevin@srlabs.de>

.github/workflows/rust.yml

@@ -28,7 +28,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly-2024-08-13
+          toolchain: nightly
           components: rustfmt, rust-src
           override: true
 

Dockerfile

@@ -23,7 +23,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # Set up Rust
-RUN rustup default nightly-2024-08-13 \
+RUN rustup default nightly \
     && rustup component add rust-src \
     && cargo install --force ziggy cargo-afl honggfuzz grcov cargo-contract \
     && rustup component add clippy

README.Docker.md

@@ -17,7 +17,7 @@ includes:
     - LLVM 19 and Clang 19 are installed
 
 2. **Setting Up Rust**:
-    - This Dockerfile sets Rust to nightly version (`nightly-2024-08-13`) to ensure compatibility with Phink's
+   - This Dockerfile sets Rust to nightly version (`nightly`) to ensure compatibility with Phink's
       codebase.
     - Additional Rust components and tools such as `rust-src`, `cargo-afl`, `honggfuzz`, `grcov`, and `cargo-contract`
       are installed to support fuzzing and coverage instrumentation.

tests/docker/Dockerfile

@@ -23,7 +23,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # Set up Rust
-RUN rustup default nightly-2024-08-13 \
+RUN rustup default nightly \
     && rustup component add rust-src \
     && cargo install --force ziggy cargo-afl honggfuzz grcov cargo-contract \
     && rustup component add clippy