.github/workflows: install cross-compile toolchain before make release

GCC for x86_64 and aarch64 are already included in GitHub Actions' images, but not those for other architectures e.g. riscv64. Install all of them to make sure they are available.

Author: hack3ric

.github/workflows/release.yaml

@@ -21,6 +21,10 @@ jobs:
         with:
           go-version: 1.25.1
 
+      - name: Set up cross-compile toolchain
+        run: |
+          sudo apt install gcc-x86-64-linux-gnu gcc-aarch64-linux-gnu gcc-riscv64-linux-gnu
+
       - name: Generate the artifacts
         run: make release
 

.github/workflows/test.yml

@@ -18,6 +18,10 @@ jobs:
       with:
         go-version: 1.25.1
 
+    - name: Set up cross-compile toolchain
+      run: |
+        apt install gcc-x86-64-linux-gnu gcc-aarch64-linux-gnu gcc-riscv64-linux-gnu
+
     - name: Check module vendoring
       run: |
         go mod tidy