Upgrade to latest Guava version, that warns us to move to jspecify Nullable annotation (https://jspecify.dev/) similar to what Guava does, so that we can continue to use the transitive dep while we are preparing to define an explicit dependency.

PiperOrigin-RevId: 739269882
Change-Id: I806c778c0228a82c4feeedeb23ed603cedfd3f20

Author: ludoch

THIRD-PARTY.txt

@@ -171,6 +171,7 @@ The repository contains 3rd-party code under the following licenses:
         * Spring Web MVC (org.springframework:spring-webmvc:5.3.22 - https://github.com/spring-projects/spring-framework)
         * Truth Core (com.google.truth:truth:1.1.3 - http://github.com/google/truth/truth)
         * Truth Extension for Java8 (com.google.truth.extensions:truth-java8-extension:1.1.3 - http://github.com/google/truth/truth-extensions-parent/truth-java8-extension)
+        * Jspecify (org.jspecify:jspecify:1.0.0 - https://jspecify.dev)
 
     Apache License, Version 2.0, Eclipse Public License - Version 1.0
 
@@ -258,12 +259,7 @@ The repository contains 3rd-party code under the following licenses:
 
         * MySQL Connector/J (mysql:mysql-connector-java:8.0.28 - http://dev.mysql.com/doc/connector-j/en/)
 
-    GNU General Public License, version 2, The MIT License
-
-        * Checker Qual (org.checkerframework:checker-compat-qual:2.5.3 - https://checkerframework.org)
-        * Checker Qual (org.checkerframework:checker-compat-qual:2.5.5 - https://checkerframework.org)
-
-    Go License
+     Go License
 
         * RE2/J (com.google.re2j:re2j:1.5 - http://github.com/google/re2j)
 
@@ -297,7 +293,6 @@ The repository contains 3rd-party code under the following licenses:
 
         * Animal Sniffer Annotations (org.codehaus.mojo:animal-sniffer-annotations:1.20 - http://www.mojohaus.org/animal-sniffer/animal-sniffer-annotations)
         * Animal Sniffer Annotations (org.codehaus.mojo:animal-sniffer-annotations:1.21 - https://www.mojohaus.org/animal-sniffer/animal-sniffer-annotations)
-        * Checker Qual (org.checkerframework:checker-qual:3.24.0 - https://checkerframework.org)
         * jnr-x86asm (com.github.jnr:jnr-x86asm:1.0.2 - http://github.com/jnr/jnr-x86asm)
         * jsoup Java HTML Parser (org.jsoup:jsoup:1.15.3 - https://jsoup.org/)
         * JUL to SLF4J bridge (org.slf4j:jul-to-slf4j:1.7.30 - http://www.slf4j.org)

api/src/main/java/com/google/appengine/api/appidentity/AppIdentityServiceFailureException.java

@@ -16,7 +16,7 @@
 
 package com.google.appengine.api.appidentity;
 
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link AppIdentityServiceFailureException} is thrown when any unknown error occurs while

api/src/main/java/com/google/appengine/api/appidentity/AppIdentityServiceImpl.java

@@ -46,7 +46,7 @@
 import java.util.Random;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.atomic.AtomicReference;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /** Implementation of the AppIdentityService interface. */
 class AppIdentityServiceImpl implements AppIdentityService {

api/src/main/java/com/google/appengine/api/blobstore/BlobInfo.java

@@ -21,7 +21,7 @@
 import java.io.ObjectInputStream;
 import java.io.Serializable;
 import java.util.Date;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code BlobInfo} contains metadata about a blob. This metadata is gathered by

api/src/main/java/com/google/appengine/api/blobstore/BlobInfoFactory.java

@@ -28,7 +28,7 @@
 import com.google.appengine.api.datastore.Query;
 import java.util.Date;
 import java.util.Iterator;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code BlobInfoFactory} provides a trivial interface for retrieving

api/src/main/java/com/google/appengine/api/blobstore/BlobKey.java

@@ -18,7 +18,7 @@
 
 import java.io.Serializable;
 import java.util.Objects;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code BlobKey} contains the string identifier of a large (possibly

api/src/main/java/com/google/appengine/api/blobstore/BlobstoreInputStream.java

@@ -22,7 +22,7 @@
 import com.google.common.base.Preconditions;
 import java.io.IOException;
 import java.io.InputStream;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * BlobstoreInputStream provides an InputStream view of a blob in

api/src/main/java/com/google/appengine/api/blobstore/BlobstoreService.java

@@ -21,7 +21,7 @@
 import java.util.Map;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code BlobstoreService} allows you to manage the creation and

api/src/main/java/com/google/appengine/api/blobstore/BlobstoreServiceImpl.java

@@ -40,7 +40,7 @@
 import java.util.Map;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code BlobstoreServiceImpl} is an implementation of {@link BlobstoreService} that makes API

api/src/main/java/com/google/appengine/api/blobstore/ByteRange.java

@@ -21,7 +21,7 @@
 import java.util.Objects;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * A byte range as parsed from a request Range header.  Format produced by this class is