Fixed public tree_shaker build.

PiperOrigin-RevId: 540053910

Author: tomball

tree_shaker/Makefile

@@ -52,7 +52,7 @@ RESOURCES = \
 
 DIST_DEPS = $(JSR305_JAR) j2objc_annotations.jar protobuf_runtime.jar
 INTERNAL_DEPS = $(GUAVA_JAR) $(PROCYON_JARS) $(SCENELIB_JAR) \
-  $(AUTOVALUE_ANNOTATIONS_JAR) $(FLOGGER_JARS)
+  $(AUTOVALUE_ANNOTATIONS_JAR) $(FLOGGER_JARS) $(JSPECIFY_JAR)
 ifdef JAVA_8
 INTERNAL_DEPS += $(JAVAC_JAR)
 endif