ci: Separate install process of clang-12

.github/actions/setup/action.yaml

@@ -13,10 +13,14 @@ inputs:
 runs:
   using: composite
   steps:
+    - run: |
+        sudo apt-get update
+        sudo apt-get install -y build-essential valgrind libreadline-dev
+      shell: bash
     - run: |
         echo "deb http://archive.ubuntu.com/ubuntu/ jammy main universe" | sudo tee /etc/apt/sources.list.d/jammy-repositories.list
         sudo apt-get update
-        sudo apt-get install -y build-essential clang-12=1:12.0.1-19ubuntu3 valgrind libreadline-dev
+        sudo apt-get install -y clang-12=1:12.0.1-19ubuntu3
       shell: bash
     - run: |
         echo "Iy" | bash -c 'bash <(curl -s https://raw.githubusercontent.com/tmatis/funcheck/main/scripts/install.sh)'