reverts "[wip] tests asan build w/ gcc"

This reverts commit 4232fb1.

Author: ju1ius

.github/workflows/push.yml

@@ -80,7 +80,7 @@ jobs:
           configurationParameters: >-
             --${{ matrix.debug && 'enable' || 'disable' }}-debug
             --${{ matrix.zts && 'enable' || 'disable' }}-zts
-            ${{ matrix.asan && 'CFLAGS="-fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=undefined,address" --disable-opcache-jit' || '' }}
+            ${{ matrix.asan && 'CFLAGS="-fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=undefined,address" CC=clang CXX=clang++ --disable-opcache-jit' || '' }}
           skipSlow: ${{ matrix.asan }}
       - name: make
         run: make -j$(/usr/bin/nproc) >/dev/null