ci: cd into BASE_BUILD_DIR for GetCMakeLogFiles

Author: Sjors

ci/test/03_test_script.sh

@@ -131,6 +131,7 @@ if [[ "${RUN_TIDY}" == "true" ]]; then
 fi
 
 bash -c "cmake -S $BASE_ROOT_DIR -B ${BASE_BUILD_DIR} $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG" || (
+  cd "${BASE_BUILD_DIR}"
   # shellcheck disable=SC2046
   cat $(cmake -P "${BASE_ROOT_DIR}/ci/test/GetCMakeLogFiles.cmake")
   false