Decrease integration tests duration (#1095)

80% of the integration tests was related to random temporal types tests.
Decrease the number of random test speeds up the process.

This is not a issue since these tests paths are already cover by property tests in the bolt-connection unit tests suite and in Testkit.

Author: bigmontz

packages/neo4j-driver/test/temporal-types.test.js

@@ -26,7 +26,7 @@ const {
   temporalUtil: { timeZoneOffsetInSeconds, totalNanoseconds }
 } = internal
 
-const RANDOM_VALUES_TO_TEST = 2000
+const RANDOM_VALUES_TO_TEST = 500
 const MIN_TEMPORAL_ARRAY_LENGTH = 20
 const MAX_TEMPORAL_ARRAY_LENGTH = 1000
 /**