ci: use g++

Author: igagis

.github/workflows/ci.yml

@@ -94,8 +94,8 @@ jobs:
     runs-on: ${{ (matrix.labels == '' && 'ubuntu-latest') || matrix.labels }}
     container: ${{ matrix.image_owner }}${{ matrix.os }}:${{ matrix.codename }}
     name: sanitizer - ${{ matrix.image_owner }}${{ matrix.os }}:${{ matrix.codename }}
-    env:
-      CXX: clang++
+    # env:
+    #   CXX: clang++
     steps:
       # - name: add llvm repo (for clang-format)
       #   uses: myci-actions/add-deb-repo@main