[FLINK-16417][e2e] Slightly increase offheap memory for ConnectedComp…

…onents test

The calculated off-heap size was 130 MB.
The test passes on JDK 11 when setting it to 270 MB.
The test fails on JDK 11 when setting it to 135 MB.
The test passes on JDK 11 when setting it to 160 MB.

This commit sets the memory to 160MB.

flink-end-to-end-tests/test-scripts/test_high_parallelism_iterations.sh

@@ -32,6 +32,7 @@ TEST_PROGRAM_JAR=${END_TO_END_DIR}/$TEST/target/$TEST_PROGRAM_NAME.jar
 set_config_key "taskmanager.numberOfTaskSlots" "$SLOTS_PER_TM"
 set_config_key "taskmanager.memory.network.min" "160m"
 set_config_key "taskmanager.memory.network.max" "160m"
+set_config_key "taskmanager.memory.framework.off-heap.size" "160m"
 
 print_mem_use
 start_cluster