feat(deps): add jspecify to shared dependencies

Author: nnicolee

sdk-platform-java/gapic-generator-java-pom-parent/pom.xml

@@ -33,6 +33,7 @@
     <protobuf.version>4.33.2</protobuf.version>
     <opentelemetry.version>1.62.0</opentelemetry.version>
     <errorprone.version>2.48.0</errorprone.version>
+    <jspecify.version>1.0.0</jspecify.version>
     <j2objc-annotations.version>3.1</j2objc-annotations.version>
     <threetenbp.version>1.7.0</threetenbp.version>
     <junit.version>5.11.4</junit.version>

sdk-platform-java/java-shared-dependencies/third-party-dependencies/pom.xml

@@ -262,6 +262,11 @@
         <artifactId>tink</artifactId>
         <version>${com.google.crypto.tink.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.jspecify</groupId>
+        <artifactId>jspecify</artifactId>
+        <version>${jspecify.version}</version>
+      </dependency>
     </dependencies>
   </dependencyManagement>
 </project>

sdk-platform-java/java-shared-dependencies/upper-bound-check/pom.xml

@@ -243,5 +243,9 @@
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-iam-v1</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
   </dependencies>
 </project>