Update action

Author: udoprog

.github/workflows/benchmarks.yml

@@ -29,7 +29,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
     - run: cargo bench --package rune-benches -- --output-format bencher | tee output.txt
-    - uses: actions/cache@v1
+    - uses: actions/cache@v4
       with:
         path: ./cache
         key: ${{ runner.os }}-benchmark