package/expat: update CPE variables

package/expat: update CPE variables

libexpat:expat has been replaced by libexpat_project:libexpat:
  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Alibexpat_project%3Alibexpat

  <cpe-item name="cpe:/a:libexpat:expat:2.2.10" deprecated="true" deprecation_date="2021-01-25T15:44:50.537Z">
    <title xml:lang="en-US">libexpat Expat 2.2.10</title>
      <reference href="https://github.com/libexpat/libexpat/">Version</reference>
    <cpe-23:cpe23-item name="cpe:2.3:a:libexpat:expat:2.2.10:*:*:*:*:*:*:*">
        <cpe-23:deprecated-by name="cpe:2.3:a:libexpat_project:libexpat:2.2.10:*:*:*:*:*:*:*" type="NAME_CORRECTION"/>

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>