Metaschema DateWithTimezoneDatatype definition allows invalid timezone values

[RS-Credentive]

metaschema/schema/xml/metaschema-datatypes.xsd

Line 38 in a36f579

<xs:pattern value="(((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)|(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))|(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))|(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30)))(Z|[+-][0-9]{2}:[0-9]{2})"/>

The timezone portion of the regex is (Z|[+-][0-9]{2}:[0-9]{2})

According to RFC 3339, the proper format is:

   time-hour       = 2DIGIT  ; 00-23
   time-minute     = 2DIGIT  ; 00-59
  <...>
   time-numoffset  = ("+" / "-") time-hour ":" time-minute
   time-offset     = "Z" / time-numoffset

The timezone regex should be (Z|([+|-])([0-1][0-9]|2[0-3]):([0-5][0-9]))

There is a similar error here:

metaschema/schema/xml/metaschema-datatypes.xsd

Line 56 in a36f579

<xs:pattern value="(((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)|(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))|(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))|(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30)))T(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)?(Z|(-((0[0-9]|1[0-2]):00|0[39]:30)|\+((0[0-9]|1[0-4]):00|(0[34569]|10):30|(0[58]|12):45)))"/>