Update Guava to version 31.1-jre

Fixes: b/280402147
Change-Id: I430b07758fb8c76d82cd17eb1d87147ac9d89b2b

build.gradle

diff --git a/build.gradle b/build.gradle
index 85e3fc6..3f82856 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,10 +7,9 @@
 import desugaredlibrary.CustomConversionAsmRewriterTask
 import net.ltgt.gradle.errorprone.CheckSeverity
 import org.gradle.internal.os.OperatingSystem
-import tasks.DownloadDependency
 import smali.SmaliTask
+import tasks.DownloadDependency
 import tasks.GetJarsFromConfiguration
-import utils.Utils
 
 buildscript {
     repositories {
@@ -33,7 +32,7 @@
     javassistVersion = '3.29.2-GA'
     espressoVersion = '3.0.0'
     fastutilVersion = '7.2.0'
-    guavaVersion = '30.1.1-jre'
+    guavaVersion = '31.1-jre'
     joptSimpleVersion = '4.6'
     gsonVersion = '2.7'
     junitVersion = '4.13-beta-2'
@@ -1140,7 +1139,7 @@
             "Main",
             ["src/main/keep.txt", generateR8LibKeepRules.outputs.files[0]],
             r8NoManifestWithRelocatedDeps,
-            r8LibPath,
+            r8LibPath
     ).dependsOn(generateR8LibKeepRules)
     inputs.files r8NoManifestWithRelocatedDeps.outputs.files
     outputs.file r8LibPath