Fix workflow

Author: mtshiba

.github/workflows/release.yml

@@ -39,6 +39,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
+      - name: update-rustup
+        run: rustup update stable
       - uses: taiki-e/upload-rust-binary-action@v1
         with:
           bin: els

.github/workflows/rust.yml

@@ -18,7 +18,9 @@ jobs:
     - uses: actions/checkout@v2
     - uses: Swatinem/rust-cache@v2
     - name: Build
-      run: cargo build --verbose
+      run: |
+        rustup update stable
+        cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
     - uses: actions-rs/cargo@v1