Update WORKSPACE repo version

Bump mpact-sim and mpact-riscv versions.

PiperOrigin-RevId: 556941798

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index f44e7b6..e6a2b02 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -6,17 +6,17 @@
 # MPACT-RiscV repo
 http_archive(
     name = "com_google_mpact-riscv",
-    sha256 = "de8672c59d454182a406fe859de4c87f86116dac320ae366aca60a3258370c1b",
-    strip_prefix = "mpact-riscv-eadd26c36777070935ae85ff7f556185085dc188",
-    url = "https://github.com/google/mpact-riscv/archive/eadd26c36777070935ae85ff7f556185085dc188.tar.gz",
+    sha256 = "8b83d43eb2ec13bd2b1c8d2911df5d282f632a6cbefeb21859a13cb45546ed09",
+    strip_prefix = "mpact-riscv-c75c080ce62904e88e8c79b9e4b88428c10d9f80",
+    url = "https://github.com/google/mpact-riscv/archive/c75c080ce62904e88e8c79b9e4b88428c10d9f80.tar.gz",
 )
 
 # MPACT-Sim repo
 http_archive(
     name = "com_google_mpact-sim",
-    sha256 = "2405278024e66328217ab945e385fc4e3e028be19d71448ddeda2579679bd82d",
-    strip_prefix = "mpact-sim-daacce22769d45ffb37207ad772751f6a7e03bd4",
-    url = "https://github.com/google/mpact-sim/archive/daacce22769d45ffb37207ad772751f6a7e03bd4.tar.gz",
+    sha256 = "8b35b5f172f241fd207f5f54d81aacab1617dea16607b36e3417ef47f2366afc",
+    strip_prefix = "mpact-sim-c4b68d7bdef36b9eb2e85f8dc22ccc4eb27ba4c5",
+    url = "https://github.com/google/mpact-sim/archive/c4b68d7bdef36b9eb2e85f8dc22ccc4eb27ba4c5.tar.gz",
 )
 
 load("@com_google_mpact-sim//:repos.bzl", "mpact_sim_repos")