Change CI action cache to v4

Author: kdw503

.github/workflows/CI.yml

@@ -13,7 +13,6 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.10'
           - '1.6'
           - '1.1'
           - '1'
@@ -28,7 +27,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
+      - uses: actions/cache@v4
         env:
           cache-name: cache-artifacts
         with: