fix: method descriptor for RegexRoadblocks hook

See https://github.com/openjdk/jdk/blob/jdk-9%2B181/jdk/src/java.base/share/classes/java/util/regex/Pattern.java#L5761

Author: simonresch

sanitizers/src/main/java/com/code_intelligence/jazzer/sanitizers/RegexRoadblocks.java

@@ -194,7 +194,7 @@ public static void nodeMatchHook(
       type = HookType.AFTER,
       targetClassName = "java.util.regex.Pattern",
       targetMethod = "SingleI",
-      targetMethodDescriptor = "(II)Ljava/util/regex/Pattern$CharPredicate;",
+      targetMethodDescriptor = "(II)Ljava/util/regex/Pattern$BmpCharPredicate;",
       additionalClassesToHook = {"java.util.regex.Pattern"})
   @MethodHook(
       type = HookType.AFTER,