Fix leading zero regex

[nickumia-reisys]

Related to

• 251

• https://github.com/GSA/catalog.data.gov/pull/890#pullrequestreview-1355455689

Changes:

• New Leading Zero Regex: (\s)(-?)0+((0|[1-9][0-9]*)(\.[0-9]*)?)
• Test Conditions

  14.601813, 080, 080.012, 83.0312, 090.01, 
  14.01813, 0.001, -1.2, -010.02, -010.02000,
  14.332601813, 080, 00334, 01, 02, 03
  0.0123, 0.123, 000123
  0.001, 0.01, 02,