SAK-23179 update purepoms parent to 2.8.7

git-svn-id: https://source.sakaiproject.org/svn/search/branches/search-1.3.x@119008 66ffb92e-73f9-0310-93c1-f5514f145a0a
[maven-release-plugin] prepare release search-1.3.7

git-svn-id: https://source.sakaiproject.org/svn/search/branches/search-1.3.x@119011 66ffb92e-73f9-0310-93c1-f5514f145a0a
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://source.sakaiproject.org/svn/search/branches/search-1.3.x@119013 66ffb92e-73f9-0310-93c1-f5514f145a0a