install GCC to CI

Author: hmsk

.github/workflows/main.yml

@@ -23,6 +23,12 @@ jobs:
           - macos-latest
 
     steps:
+      - name: Set up GCC
+        if:   ${{ matrix.os }} == 'ubuntu-latest'
+        uses: egor-tensin/setup-gcc@v1
+        with:
+          version: latest
+          platform: x64
       - uses: actions/checkout@v4
         with:
           submodules: true