[CI] Utilise le C++20 pour le workflow avec coverity.

Author: grospelliergilles

.github/workflows/coverity.yml

@@ -35,9 +35,8 @@ jobs:
           -DCMAKE_BUILD_TYPE=Release \
           -DCMAKE_C_COMPILER=gcc \
           -DCMAKE_CXX_COMPILER=g++ \
+          -DARCCORE_CXX_STANDARD=20 \
           -DARCANE_DEFAULT_PARTITIONER=Metis \
-          -DARCANE_WANT_LEGACY_CONNECTIVITY=OFF \
-          -DARCANE_WANT_ARCCON_EXPORT_TARGET=OFF \
           -DARCANE_DISABLE_PERFCOUNTER_TESTS=ON \
           -DCMAKE_DISABLE_FIND_PACKAGE_SWIG=ON