Bump CI fuzz tasks now that we have more cores in CI

Author: TheBlueMatt

fuzz/ci-fuzz.sh

@@ -33,7 +33,7 @@ cargo --color always hfuzz build
 for TARGET in src/bin/*.rs; do
 	FILENAME=$(basename $TARGET)
 	FILE="${FILENAME%.*}"
-	HFUZZ_RUN_ARGS="--exit_upon_crash -v -n2"
+	HFUZZ_RUN_ARGS="--exit_upon_crash -v -n8"
 	if [ "$FILE" = "chanmon_consistency_target" ]; then
 		HFUZZ_RUN_ARGS="$HFUZZ_RUN_ARGS -F 64 -N1000"
 	elif [ "$FILE" = "process_network_graph_target" -o "$FILE" = "full_stack_target" -o "$FILE" = "router_target" ]; then