ISIS-1424: update to example app pom.xml to reference 1.12.2
ISIS-1424: update to example app pom.xml to reference 1.12.2

oscarbou/isis,niv0/isis,incodehq/isis,estatio/isis,estatio/isis,sanderginn/isis,oscarbou/isis,apache/isis,oscarbou/isis,niv0/isis,apache/isis,oscarbou/isis,sanderginn/isis,apache/isis,apache/isis,incodehq/isis,incodehq/isis,sanderginn/isis,apache/isis,estatio/isis,incodehq/isis,niv0/isis,apache/isis,niv0/isis,estatio/isis,sanderginn/isis