[CI] fix github CI fail issue

Author: pfchen

.github/workflows/build_all.yml

@@ -20,7 +20,7 @@ jobs:
 
     - name: Cache toolchain
       id: cache
-      uses: actions/cache@v1
+      uses: actions/cache@v4
       with: 
         path: /opt/riscv64-unknown-elf
         key : ${{runner.OS}}-riscv64-unknown-elf-caches-v1-${{ hashFiles('bin/riscv64-unknown-elf-gcc') }}