Add targets explicitly in build github workflow.

Author: Ivorforce

.github/workflows/build.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - run: rustup toolchain install stable --profile minimal
+    - run: rustup toolchain install stable --profile minimal && rustup target add ${{ matrix.target.target }}
     - uses: Swatinem/rust-cache@v2
       with:
         prefix-key: "main"