Bump epics-base version to 7.0.8

.gitlab-ci.yml

 ---
 variables:
   E3_MODULE_LIST: "autosave caputlog recsync iocstats essioc"
-  E3_CI_BASE_VERSION: "7.0.7-37d472c"
+  E3_CI_BASE_VERSION: "7.0.8-b4af458"
 
 stages:
   - check

configure/RELEASE

-EPICS_BASE=/epics/base-7.0.7
+EPICS_BASE=/epics/base-7.0.8
 
 E3_REQUIRE_NAME:=require
-E3_REQUIRE_VERSION:=5.0.0
+E3_REQUIRE_VERSION:=5.1.0
 
 
 # The definitions shown below can also be placed in an untracked RELEASE.local