tests: Use /usr/bin/env bash instead of /bin/bash

Signed-off-by: Philipp Jungkamp <philipp.jungkamp@rwth-aachen.de>

Author: pjungkamp

tests/integration/CMakeLists.txt

@@ -6,7 +6,7 @@
 
 add_custom_target(run-integration-tests
     COMMAND
-        /bin/bash -o pipefail -c \"
+        /usr/bin/env bash -o pipefail -c \"
             SRCDIR=${PROJECT_SOURCE_DIR}
             BUILDDIR=${PROJECT_BINARY_DIR}
             ${PROJECT_SOURCE_DIR}/tools/integration-tests.sh 2>&1 | c++filt\"

tests/unit/CMakeLists.txt

@@ -28,7 +28,7 @@ target_link_libraries(unit-tests PUBLIC
 
 add_custom_target(run-unit-tests
     COMMAND
-        /bin/bash -o pipefail -c \"
+        /usr/bin/env bash -o pipefail -c \"
             $<TARGET_FILE:unit-tests> 2>&1 | c++filt\"
     DEPENDS
         unit-tests