CI: Switch OpenTitan CI to run on Ubuntu 24.04

We are currently running the OpenTitan CI on Ubuntu 22.04 as that is what
officially support according to
https://opentitan.org/book/doc/getting_started/index.html.
This commit switches to 24.04 to work out what needs to change to support
the most recent LTS.

Signed-off-by: Matthias J. Kannwischer <matthias@kannwischer.eu>

Author: mkannwischer

.github/actions/setup-opentitan/action.yml

@@ -36,10 +36,7 @@ runs:
         sudo apt update
         cd expo
         sed -e '/^#/d' -e '/libncursesw5/d' ./apt-requirements.txt | xargs sudo apt install -y
-        # Install runtime dependencies needed by tools
-        sudo apt install -y gcc g++ libtinfo5 srecord pkg-config libudev-dev libssl-dev \
-          libftdi1-dev libelf-dev zlib1g-dev
-        pip3 install --user -r python-requirements.txt --require-hashes
+        pip3 install --user -r python-requirements.txt --require-hashes --break-system-packages
 
     - name: Cache Verilator
       id: cache-verilator

.github/workflows/integration-opentitan.yml

@@ -11,7 +11,7 @@ on:
 env:
   AWS_ROLE: arn:aws:iam::559050233797:role/mlkem-c-aarch64-gh-action
   AWS_REGION: us-east-1
-  AMI_UBUNTU_22_04_X86_64: ami-0bbdd8c17ed981ef9
+  AMI_UBUNTU_24_04_X86_64: ami-0b6c6ebed2801a5cb
 
 jobs:
   start-ec2-runner:
@@ -39,7 +39,7 @@ jobs:
         with:
           mode: start
           github-token: ${{ secrets.AWS_GITHUB_TOKEN }}
-          ec2-image-id: ${{ env.AMI_UBUNTU_22_04_X86_64 }}
+          ec2-image-id: ${{ env.AMI_UBUNTU_24_04_X86_64 }}
           ec2-instance-type: c7i.2xlarge
           ec2-volume-size: 32
           subnet-id: subnet-07b2729e5e065962f