Update guava to 33.4.8-jre

- Guava 33.4.8 (after a false start in Guava 33.4.5) changes Guava to
  be a Java module. You can still use Guava without using the module
  system yourself. [1]
- Release notes: [2]

[1] https://github.com/google/guava/releases/tag/v33.4.1
[2] https://github.com/google/guava/releases

Release-Notes: Update guava to 33.4.8-jre
Change-Id: I9c171a448778a3d3ad5ae3d1747d23b717db3043

tools/nongoogle.bzl

diff --git a/tools/nongoogle.bzl b/tools/nongoogle.bzl
index 257a68e..ff52fef 100644
--- a/tools/nongoogle.bzl
+++ b/tools/nongoogle.bzl
@@ -13,11 +13,11 @@
 
 AUTO_VALUE_VERSION = "1.11.0"
 
-GUAVA_VERSION = "33.4.0-jre"
+GUAVA_VERSION = "33.4.8-jre"
 
-GUAVA_BIN_SHA1 = "03fcc0a259f724c7de54a6a55ea7e26d3d5c0cac"
+GUAVA_BIN_SHA1 = "e70a3268e6cd3e7d458aa15787ce6811c34e96ae"
 
-GUAVA_TESTLIB_BIN_SHA1 = "e849ea71846b5ca96387d543c7ac862f18fe2513"
+GUAVA_TESTLIB_BIN_SHA1 = "7443cfac765d74b8a31bbe6c49357715e32f714c"
 
 GUAVA_DOC_URL = "https://google.github.io/guava/releases/" + GUAVA_VERSION + "/api/docs/"