[SPARK-29578][TESTS] Add "8634" as another skipped day for Kwajalein timzeone due to more recent timezone updates in later JDK 8

### What changes were proposed in this pull request?

Recent timezone definition changes in very new JDK 8 (and beyond) releases cause test failures. The below was observed on JDK 1.8.0_232. As before, the easy fix is to allow for these inconsequential variations in test results due to differing definition of timezones.

### Why are the changes needed?

Keeps test passing on the latest JDK releases.

### Does this PR introduce any user-facing change?

None

### How was this patch tested?

Existing tests

Closes #26236 from srowen/SPARK-29578.

Authored-by: Sean Owen <[email protected]>
Signed-off-by: Sean Owen <[email protected]>

Author: srowen

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/DateTimeUtilsSuite.scala

@@ -555,12 +555,12 @@ class DateTimeUtilsSuite extends SparkFunSuite with Matchers {
 
     // There are some days are skipped entirely in some timezone, skip them here.
     val skipped_days = Map[String, Set[Int]](
-      "Kwajalein" -> Set(8632, 8633),
+      "Kwajalein" -> Set(8632, 8633, 8634),
       "Pacific/Apia" -> Set(15338),
       "Pacific/Enderbury" -> Set(9130, 9131),
       "Pacific/Fakaofo" -> Set(15338),
       "Pacific/Kiritimati" -> Set(9130, 9131),
-      "Pacific/Kwajalein" -> Set(8632, 8633),
+      "Pacific/Kwajalein" -> Set(8632, 8633, 8634),
       "MIT" -> Set(15338))
     for (tz <- ALL_TIMEZONES) {
       val skipped = skipped_days.getOrElse(tz.getID, Set.empty)