Update GitHub action

Author: aumetra

.github/workflows/ci.yml

@@ -29,14 +29,12 @@ jobs:
         working-directory: ./contracts/hackatom
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Install Rust
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@master
         with:
           toolchain: 1.73.0
-          target: wasm32-unknown-unknown
-          profile: minimal
-          override: true
+          targets: wasm32-unknown-unknown
       - name: Build hackatom wasm
         run: cargo wasm --locked
       - name: Unit Test hackatom