fixup: try newer java version in CI

Author: addaleax

.evergreen/setup-env.sh

@@ -4,7 +4,7 @@ set -x
 OS_ARCH="$(uname "-m")"
 
 export BASEDIR="$PWD/.evergreen"
-export PATH="$BASEDIR/npm-10/node_modules/.bin:$BASEDIR/node-v$NODE_JS_VERSION-win-x64:/opt/java/jdk16/bin:$PATH"
+export PATH="$BASEDIR/npm-10/node_modules/.bin:$BASEDIR/node-v$NODE_JS_VERSION-win-x64:/opt/java/jdk21/bin:$PATH"
 
 export MONGOSH_GLOBAL_CONFIG_FILE_FOR_TESTING="$BASEDIR/../../testing/tests-globalconfig.conf"