ci: Work around actions/runner-images#9491

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113430
Link: llvm/llvm-project#78354
Link: https://zolutal.github.io/aslrnt/

.github/workflows/ci.yml

@@ -37,6 +37,8 @@ jobs:
           sudo ln -s libattr.so.1 /lib/i386-linux-gnu/libattr.so
           sudo ln -s libcap.so.2 /lib/i386-linux-gnu/libcap.so
           sudo ln -s libonig.so.5 /lib/i386-linux-gnu/libonig.so
+          # Work around https://github.com/actions/runner-images/issues/9491
+          sudo sysctl vm.mmap_rnd_bits=28
 
       - name: Run tests
         run: |