Bump guava from 30.0-jre to 31.1-jre (#2940)

diff --git a/dependencies/default/pom.xml b/dependencies/default/pom.xml
index 8761387..e59c29c 100644
--- a/dependencies/default/pom.xml
+++ b/dependencies/default/pom.xml
@@ -50,7 +50,7 @@
     <findbugs-jsr305.version>3.0.2</findbugs-jsr305.version>
     <governator-annotations.version>1.17.12</governator-annotations.version>
     <governator-api.version>1.12.10</governator-api.version>
-    <guava.version>30.0-jre</guava.version>
+    <guava.version>31.1-jre</guava.version>
     <failureaccess.version>1.0.1</failureaccess.version>
     <guice.version>4.2.0</guice.version>
     <hamcrest.version>1.3</hamcrest.version>