Update rust.yml

Author: LiquidityC

.github/workflows/rust.yml

@@ -44,9 +44,9 @@ jobs:
         include:
           - os: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cargo/git