Run apt update first

Author: simolus3

.github/actions/linux/action.yml

@@ -14,6 +14,7 @@ runs:
     - name: Install cross-compiling GCC
       shell: bash
       run: |
+        sudp apt update
         sudo apt install -y gcc-aarch64-linux-gnu gcc-riscv64-linux-gnu gcc-arm-linux-gnueabihf gcc-i686-linux-gnu
 
     - name: Build binaries