Fix CI image.

Signed-off-by: Benjamin Perseghetti <bperseghetti@rudislabs.com>

Author: bperseghetti

.github/workflows/build.yml

@@ -21,6 +21,8 @@ jobs:
 
       - name: Install Dependencies
         run: |
+          wget -O- https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
+          add-apt-repository --no-update --yes "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main"
           apt update
           apt install curl python3-poetry clang-format-18 -y
           poetry config --list