ci: install rustup targets with toolchain action

Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>

Author: mkroening

.github/workflows/build.yml

@@ -52,7 +52,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
         with:
-          targets: x86_64-unknown-linux-musl
+          targets: x86_64-unknown-linux-musl, i686-unknown-linux-gnu, thumbv7em-none-eabihf
 
       - run: cargo build
 
@@ -66,10 +66,6 @@ jobs:
       - run: cargo test --target x86_64-unknown-linux-musl
         if: runner.os == 'Linux'
 
-      - name: "Install Rustup Targets"
-        run: |
-          rustup target add i686-unknown-linux-gnu
-          rustup target add thumbv7em-none-eabihf
       - name: "Build on non x86_64 platforms"
         run: |
           cargo build --target i686-unknown-linux-gnu --no-default-features --features nightly