Test earliest and latest supported version on each Java version.

.github/workflows/java-versions.yml

@@ -32,8 +32,8 @@ jobs:
           # java11=6.0.1,6.9.4,7.0.2,7.6.1,8.0.2,8.1.1,8.2-rc-1
           # ->
           # java11=8.2-rc-1
-          # The trick is that \2 will greedily eat everything before the last comma.
-          sed -r 's/^(.*?)=(.*),(.*)$/\1=\3/g' -i stutter.lockfile
+          # The trick is that \3 will greedily eat everything before the last comma.
+          sed -r 's/^(.*?)=(.*?),(.*),(.*?)$/\1=\2,\4/g' -i stutter.lockfile
           cat stutter.lockfile
       - name: Test cross Java versions compatibility
         run: |