Merge pull request #1264 from pq-code-package/opentitan

CI: Adjust OpenTitan workflow to use most recent main

Author: mkannwischer

.github/workflows/integration-opentitan.yml

@@ -52,9 +52,8 @@ jobs:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - uses: ./.github/actions/setup-opentitan
         with:
-          # TODO: switch to upstream once merged
-          expo-repository: https://github.com/mkannwischer/expo
-          expo-commit: 8e6cfe2d1cc918fa3ae6cd076e806909bb1c09e0
+          expo-repository: https://github.com/zerorisc/expo
+          expo-commit: 941d302a6d2d1ec5b1e3d7448846f56809333cee
 
       - name: Patch mlkem-native dependency
         run: |

README.md

@@ -53,6 +53,7 @@ mlkem-native is used in
  - [libOQS](https://github.com/open-quantum-safe/liboqs/) of the Open Quantum Safe project since [0.13.0](https://github.com/open-quantum-safe/liboqs/releases/tag/0.13.0) (as the default ML-KEM implementation)
  - AWS' Cryptography library [AWS-LC](https://github.com/aws/aws-lc/) since [v1.50.0](https://github.com/aws/aws-lc/releases/tag/v1.50.0)
  - The [rustls](https://github.com/rustls/rustls) TLS library written in Rust since [0.23.28](https://github.com/rustls/rustls/releases/tag/v%2F0.23.28) (through AWS-LC as the default cryptography provider)
+ - The [zeroRISC's fork of OpenTitan](https://github.com/zerorisc/expo) - an open source silicon Root of Trust (RoT)
 
 ## Formal Verification