Release 0.5.44

• Updated data to IANA TZDB 2023d. #1085
• Fixed .valueOf() to return NaN for invalid zoned objects (matching default moment) #1082.
• Performance improvements:
  • Use binary search when looking up zone information #720.
  • Avoid redundant checks in tz.guess().
  • Avoid redundant getZone() calls in .tz().