fixup! fixup! ci: add Ubuntu 24.04 jobs

Author: lzaoral

.github/workflows/ubuntu.yml

@@ -41,7 +41,7 @@ jobs:
         run: |
           if [[ "${{ matrix.version }}" == 24.04 ]]; then
             # -Werror causes false positives with sanitizers and modern GCC
-            [[ "${{ matrix.compiler }} == gcc ]] && export CXXFLAGS=
+            [[ "${{ matrix.compiler }}" == gcc ]] && export CXXFLAGS=
             make distcheck-sanitizers
           else
             make distcheck