install LLVM in action instead of sh script

.github/actions/setup_native_deps/action.yml

@@ -19,12 +19,12 @@ runs:
           /var/cache/apt
           /var/lib/apt/lists
           /etc/profile.d/llvm19.sh
-        key:
-          ${{ runner.os }}-llvm-19-${{ hashFiles('scripts/dependencies.sh') }}
+        key: ${{ runner.os }}-llvm-19-${{ hashFiles('.github/actions/setup_native_deps/action.yml') }}
 
     - name: Install Cairo Native Runtime Dependencies
       if: steps.cache-llvm.outputs.cache-hit != 'true'
       id: set-runtime-deps
       shell: bash
       run: |
-        bash ./scripts/dependencies.sh
+        sudo apt update && sudo apt upgrade -y && \
+        sudo apt install llvm-19 llvm-19-dev llvm-19-runtime clang-19 clang-tools-19 lld-19 libpolly-19-dev libmlir-19-dev mlir-19-tools

.github/workflows/ci.yml

@@ -8,8 +8,6 @@ on:
     branches:
       - main
 
-permissions: read-all
-
 jobs:
   trunk:
     name: Trunk

.github/workflows/test.yml

@@ -22,6 +22,10 @@ jobs:
           python-version: 3.x
       - name: Setup rust and cairo native env
         uses: ./.github/actions/bootstrap
+
+      - name: Source llvm binaries
+        run: source /etc/profile.d/llvm19.sh
+
       - name: fetch ef tests
         run: make setup
       - name: fetch Kakarot

scripts/dependencies.sh

@@ -30,11 +30,9 @@ function setup_llvm_deps() {
         brew install llvm@19
         ;;
     Linux)
-        $SUDO bash -c 'curl https://apt.llvm.org/llvm.sh -Lo llvm.sh
-        bash ./llvm.sh 19 all
-        rm -f ./llvm.sh
-        apt update && apt install -y \
+        $SUDO bash -c 'apt update && apt-get install -y \
             libgmp3-dev \
+            llvm-19 \
             libmlir-19-dev \
             libpolly-19-dev \
             libzstd-dev \