update actions

Author: joshuahannan

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: "1.22"
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}