Update dexmaker packages to 2.28.4

* Adds riscv64 artifacts in dexmaker AARs.

Bug: 280303444
Test: CQ
Change-Id: Id2827b0c12cddf799305bd77571ca3fa794b7c66
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f2354b4..62095e5 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -30,7 +30,7 @@
 composeCompilerPlugin = "1.5.14"  # Update when pulling in new stable binaries
 dagger = "2.49"
 dependencyAnalysisGradlePlugin = "1.32.0"
-dexmaker = "2.28.3"
+dexmaker = "2.28.4"
 dokka = "1.8.20-dev-214"
 espresso = "3.6.1"
 espressoDevice = "1.0.1"