Try to downgrade clang on ubuntu github actions

Author: dmitrylavrenov

.github/scripts/build_env/ubuntu.sh

@@ -1,6 +1,11 @@
 #!/bin/bash
 set -euo pipefail
 
+sudo apt-get remove clang clang++
+sudo apt-get install clang-14.0 clang++-14.0
+ln -s /usr/bin/clang++-14.0 /usr/bin/clang++
+ln -s /usr/bin/clang-14.0 /usr/bin/clang
+
 MOLD_GITHUB_REPO="rui314/mold"
 MOLD_VERSION="1.10.1"
 MOLD_INSTALL_PATH="${HOME}/.local"