exclude sem test on github runner

Signed-off-by: Thomas Tendyck <tt@edgeless.systems>

Author: thomasten

.github/workflows/unittests.yml

@@ -29,7 +29,7 @@ jobs:
 
     - name: Test
       run: |
-        OE_SIMULATION=1 ctest --output-on-failure
+        OE_SIMULATION=1 ctest --output-on-failure -E tests/ert/sem
       working-directory: build
 
     - name: CPack