finagle|util-cache: caffeine cache upgrade to 2.9.2

Problem/Solution

We want to keep our dependencies up to date for
the ben-manes Caffeine library. Let’s update to
version 2.9.2.

JIRA Issues: CSL-11430

Differential Revision: https://phabricator.twitter.biz/D771893

Author: heligw

CHANGELOG.rst

@@ -7,6 +7,11 @@ Note that ``PHAB_ID=#`` and ``RB_ID=#`` correspond to associated messages in com
 Unreleased
 ----------
 
+Runtime Behavior Changes
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+* util-cache: Update Caffeine cache library to version 2.9.2 ``PHAB_ID=D771893``
+
 21.10.0
 -------
 

build.sbt

@@ -21,7 +21,7 @@ val zkDependency = "org.apache.zookeeper" % "zookeeper" % zkVersion excludeAll (
 )
 
 val guavaLib = "com.google.guava" % "guava" % "25.1-jre"
-val caffeineLib = "com.github.ben-manes.caffeine" % "caffeine" % "2.9.1"
+val caffeineLib = "com.github.ben-manes.caffeine" % "caffeine" % "2.9.2"
 val jsr305Lib = "com.google.code.findbugs" % "jsr305" % "2.0.1"
 val scalacheckLib = "org.scalacheck" %% "scalacheck" % "1.15.4" % "test"
 val slf4jApi = "org.slf4j" % "slf4j-api" % slf4jVersion