deps: add j2objc annotations (#9005)

* deps: add j2objc annotations

@pzd this will be needed on the next sync with google3

WORKSPACE

@@ -40,6 +40,7 @@ maven_install(
     artifacts = [
         "com.google.code.gson:gson:2.8.6",
         "com.google.errorprone:error_prone_annotations:2.3.2",
+        "com.google.j2objc:j2obj_annotations:1.3",
         "com.google.guava:guava:30.1.1-jre",
         "com.google.truth:truth:1.1.2",
         "junit:junit:4.12",
@@ -73,6 +74,11 @@ bind(
     actual = "@maven//:com_google_errorprone_error_prone_annotations",
 )
 
+bind(
+    name = "j2objc_annotations",
+    actual = "@maven//:com_google_j2objc_j2objc_annotations",
+)
+
 bind(
     name = "junit",
     actual = "@maven//:junit_junit",

java/util/BUILD

@@ -12,6 +12,7 @@ java_library(
     visibility = ["//visibility:public"],
     deps = [
         "//external:error_prone_annotations",
+        "//external:j2objc_annotations",
         "//external:gson",
         "//external:guava",
         "//java/core",

java/util/pom.xml

@@ -27,6 +27,11 @@
       <artifactId>error_prone_annotations</artifactId>
       <version>2.5.1</version>
     </dependency>
+    <dependency>
+      <groupId>com.google.j2objc</groupId>
+      <artifactId>j2objc-annotations</artifactId>
+      <version>1.3</version>
+    </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava-testlib</artifactId>