Update checkerFrameworkVersion to v3.42.0-eisop5 (#65)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle

@@ -112,7 +112,7 @@ if (true) {
 } else {
   // To use a snapshot version of the EISOP Checker Framework.
   // TODO: Change the above test to false to use a snapshot.
-  ext.checkerFrameworkVersion = '3.42.0-eisop4'
+  ext.checkerFrameworkVersion = '3.42.0-eisop5'
   configurations.all {
     resolutionStrategy.cacheChangingModulesFor 0, 'minutes'
   }