meta: Fix CI debug build task

Author: marv7000

.github/workflows/ci.yml

@@ -37,7 +37,9 @@ jobs:
       with:
         components: rust-src
     - name: Install tools
-      run: sudo apt install -y clang llvm lld gcc-multilib
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang llvm lld gcc-multilib
     - name: Run build
       run: cargo build --target "toolchain/${{matrix.arch}}-kernel.json"
       env: