Add fastutil 7.2.1 dependency

Closes #20394.

PiperOrigin-RevId: 586723311
Change-Id: I4a12af0d3a728686b6db3852f2e4740c888fd2d2
diff --git a/MODULE.bazel b/MODULE.bazel
index c650e1e..26f3b95 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -139,6 +139,7 @@
         "io.netty:netty-transport-native-unix-common:jar:osx-x86_64:4.1.93.Final",
         "io.netty:netty-transport:4.1.93.Final",
         "io.reactivex.rxjava3:rxjava:3.1.2",
+        "it.unimi.dsi:fastutil:7.2.1",
         "javax.activation:javax.activation-api:1.2.0",
         "javax.annotation:javax.annotation-api:1.3.2",
         "javax.inject:javax.inject:1",