GEODE-10100: Replace 1.13.7 with 1.13.8 as old version (#7447)
GEODE-10100: Replace 1.13.7 with 1.13.8 as old version (#7447)

Replace 1.13.7 with 1.13.8 in old versions on develop to enable
rolling upgrade tests from 1.13.8

The serialization version has not changed between 1.13.7 and 1.13.8,
so there should be no need to keep both
masaki-yamakawa/geode,masaki-yamakawa/geode,smgoller/geode,jdeppe-pivotal/geode,jdeppe-pivotal/geode,jdeppe-pivotal/geode,smgoller/geode,masaki-yamakawa/geode,smgoller/geode,smgoller/geode,jdeppe-pivotal/geode,masaki-yamakawa/geode,smgoller/geode,masaki-yamakawa/geode,jdeppe-pivotal/geode,smgoller/geode,jdeppe-pivotal/geode,masaki-yamakawa/geode,masaki-yamakawa/geode,jdeppe-pivotal/geode,smgoller/geode