chore(NODE-5794): add reporting for individual parallel benchmarks (#4092)

Author: nbbeeken

Diff for: test/benchmarks/driverBench/index.js

@@ -78,6 +78,7 @@ benchmarkRunner
       readBench,
       writeBench,
       driverBench,
+      ...microBench.parallel,
       ...microBench.bsonBench,
       ...microBench.singleBench,
       ...microBench.multiBench