feat(lazer): upgrade anchor example to anchor 0.31

Author: Riateche

.github/workflows/ci-lazer-anchor.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: 1.82.0
+          cache-workspaces: "lazer/solana-anchor -> target"
       - uses: actions/setup-node@v4
         with:
           node-version: 22
@@ -32,16 +32,11 @@ jobs:
             cwd: lazer/solana-anchor/
       - name: Install Solana Cli
         run: |
-          sh -c "$(curl -sSfL https://release.anza.xyz/stable/install)"
+          sh -c "$(curl -sSfL https://release.anza.xyz/v2.1.21/install)"
           echo "$HOME/.local/share/solana/install/active_release/bin" >> "$GITHUB_PATH"
-      - name: Set Solana Cli version
-        run: agave-install init 1.18.26
       - name: Create Solana key
         run: solana-keygen new --no-bip39-passphrase
       - name: Install Anchor
-        run: |
-          rustup install 1.79.0
-          rustup install nightly-2025-04-15
-          RUSTFLAGS= cargo +1.79.0 install --git https://github.com/coral-xyz/anchor --tag v0.30.1 --locked anchor-cli
+        run: cargo install --git https://github.com/coral-xyz/anchor --tag v0.31.1 --locked anchor-cli
       - name: Run anchor tests
         run: pnpm run test:anchor