update CI to enable assertions for interface tests

Author: N-Maas

.github/workflows/master_ci.yml

@@ -1,9 +1,6 @@
 name: Mt-KaHyPar Master CI
 
 on:
-  push:
-    branches:
-      - master
   pull_request:
     branches:
       - master
@@ -155,7 +152,8 @@ jobs:
           rm -rf build
           mkdir build
           cd build
-          cmake .. --preset=dev -DKAHYPAR_CI_BUILD=ON
+          # use RELWITHDEBINFO preset so that assertions are enabled
+          cmake .. --preset=dev -DCMAKE_BUILD_TYPE=RELWITHDEBINFO -DKAHYPAR_CI_BUILD=ON
           make -j4 mtkahypar_interface_test
 
   mt_kahypar_python_interface_tests: