update guava version (segmentio#131)

f2prateek · web-flow · commit ae3f0a6dc0c0 · 2018-08-15T14:35:16.000-07:00
diff --git a/pom.xml b/pom.xml
@@ -36,7 +36,7 @@
     <gson.version>2.3.1</gson.version>
     <okhttp.version>3.9.0</okhttp.version>
     <retrofit1-okhttp3-client.version>1.1.0</retrofit1-okhttp3-client.version>
-    <guava.version>18.0</guava.version>
+    <guava.version>26.0-jre</guava.version>
     <backo.version>1.0.0</backo.version>
     <spring.boot.version>1.2.5.RELEASE</spring.boot.version>
     <docopt.version>0.6.0.20150202</docopt.version>
